| Step |
Hyp |
Ref |
Expression |
| 1 |
|
smat.s |
⊢ 𝑆 = ( 𝐾 ( subMat1 ‘ 𝐴 ) 𝐿 ) |
| 2 |
|
smat.m |
⊢ ( 𝜑 → 𝑀 ∈ ℕ ) |
| 3 |
|
smat.n |
⊢ ( 𝜑 → 𝑁 ∈ ℕ ) |
| 4 |
|
smat.k |
⊢ ( 𝜑 → 𝐾 ∈ ( 1 ... 𝑀 ) ) |
| 5 |
|
smat.l |
⊢ ( 𝜑 → 𝐿 ∈ ( 1 ... 𝑁 ) ) |
| 6 |
|
smat.a |
⊢ ( 𝜑 → 𝐴 ∈ ( 𝐵 ↑m ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) |
| 7 |
|
elmapi |
⊢ ( 𝐴 ∈ ( 𝐵 ↑m ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) → 𝐴 : ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ⟶ 𝐵 ) |
| 8 |
|
ffun |
⊢ ( 𝐴 : ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ⟶ 𝐵 → Fun 𝐴 ) |
| 9 |
6 7 8
|
3syl |
⊢ ( 𝜑 → Fun 𝐴 ) |
| 10 |
|
eqid |
⊢ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) = ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) |
| 11 |
10
|
mpofun |
⊢ Fun ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) |
| 12 |
11
|
a1i |
⊢ ( 𝜑 → Fun ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) |
| 13 |
|
funco |
⊢ ( ( Fun 𝐴 ∧ Fun ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) → Fun ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) ) |
| 14 |
9 12 13
|
syl2anc |
⊢ ( 𝜑 → Fun ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) ) |
| 15 |
|
fz1ssnn |
⊢ ( 1 ... 𝑀 ) ⊆ ℕ |
| 16 |
15 4
|
sselid |
⊢ ( 𝜑 → 𝐾 ∈ ℕ ) |
| 17 |
|
fz1ssnn |
⊢ ( 1 ... 𝑁 ) ⊆ ℕ |
| 18 |
17 5
|
sselid |
⊢ ( 𝜑 → 𝐿 ∈ ℕ ) |
| 19 |
|
smatfval |
⊢ ( ( 𝐾 ∈ ℕ ∧ 𝐿 ∈ ℕ ∧ 𝐴 ∈ ( 𝐵 ↑m ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) → ( 𝐾 ( subMat1 ‘ 𝐴 ) 𝐿 ) = ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) ) |
| 20 |
16 18 6 19
|
syl3anc |
⊢ ( 𝜑 → ( 𝐾 ( subMat1 ‘ 𝐴 ) 𝐿 ) = ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) ) |
| 21 |
1 20
|
eqtrid |
⊢ ( 𝜑 → 𝑆 = ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) ) |
| 22 |
21
|
funeqd |
⊢ ( 𝜑 → ( Fun 𝑆 ↔ Fun ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) ) ) |
| 23 |
14 22
|
mpbird |
⊢ ( 𝜑 → Fun 𝑆 ) |
| 24 |
|
fdmrn |
⊢ ( Fun 𝑆 ↔ 𝑆 : dom 𝑆 ⟶ ran 𝑆 ) |
| 25 |
23 24
|
sylib |
⊢ ( 𝜑 → 𝑆 : dom 𝑆 ⟶ ran 𝑆 ) |
| 26 |
21
|
dmeqd |
⊢ ( 𝜑 → dom 𝑆 = dom ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) ) |
| 27 |
|
dmco |
⊢ dom ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) = ( ◡ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) “ dom 𝐴 ) |
| 28 |
|
fdm |
⊢ ( 𝐴 : ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ⟶ 𝐵 → dom 𝐴 = ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) |
| 29 |
6 7 28
|
3syl |
⊢ ( 𝜑 → dom 𝐴 = ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) |
| 30 |
29
|
imaeq2d |
⊢ ( 𝜑 → ( ◡ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) “ dom 𝐴 ) = ( ◡ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) “ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) |
| 31 |
30
|
eleq2d |
⊢ ( 𝜑 → ( 𝑥 ∈ ( ◡ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) “ dom 𝐴 ) ↔ 𝑥 ∈ ( ◡ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) “ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) ) |
| 32 |
|
opex |
⊢ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ∈ V |
| 33 |
10 32
|
fnmpoi |
⊢ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) Fn ( ℕ × ℕ ) |
| 34 |
|
elpreima |
⊢ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) Fn ( ℕ × ℕ ) → ( 𝑥 ∈ ( ◡ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) “ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ↔ ( 𝑥 ∈ ( ℕ × ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) ) |
| 35 |
33 34
|
ax-mp |
⊢ ( 𝑥 ∈ ( ◡ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) “ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ↔ ( 𝑥 ∈ ( ℕ × ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) |
| 36 |
35
|
a1i |
⊢ ( 𝜑 → ( 𝑥 ∈ ( ◡ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) “ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ↔ ( 𝑥 ∈ ( ℕ × ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) ) |
| 37 |
|
simplr |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) |
| 38 |
37
|
fveq2d |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) = ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ) |
| 39 |
|
df-ov |
⊢ ( ( 1st ‘ 𝑥 ) ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ( 2nd ‘ 𝑥 ) ) = ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) |
| 40 |
38 39
|
eqtr4di |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) = ( ( 1st ‘ 𝑥 ) ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ( 2nd ‘ 𝑥 ) ) ) |
| 41 |
|
breq1 |
⊢ ( 𝑖 = ( 1st ‘ 𝑥 ) → ( 𝑖 < 𝐾 ↔ ( 1st ‘ 𝑥 ) < 𝐾 ) ) |
| 42 |
|
id |
⊢ ( 𝑖 = ( 1st ‘ 𝑥 ) → 𝑖 = ( 1st ‘ 𝑥 ) ) |
| 43 |
|
oveq1 |
⊢ ( 𝑖 = ( 1st ‘ 𝑥 ) → ( 𝑖 + 1 ) = ( ( 1st ‘ 𝑥 ) + 1 ) ) |
| 44 |
41 42 43
|
ifbieq12d |
⊢ ( 𝑖 = ( 1st ‘ 𝑥 ) → if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) = if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) ) |
| 45 |
44
|
opeq1d |
⊢ ( 𝑖 = ( 1st ‘ 𝑥 ) → 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 = 〈 if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) |
| 46 |
|
breq1 |
⊢ ( 𝑗 = ( 2nd ‘ 𝑥 ) → ( 𝑗 < 𝐿 ↔ ( 2nd ‘ 𝑥 ) < 𝐿 ) ) |
| 47 |
|
id |
⊢ ( 𝑗 = ( 2nd ‘ 𝑥 ) → 𝑗 = ( 2nd ‘ 𝑥 ) ) |
| 48 |
|
oveq1 |
⊢ ( 𝑗 = ( 2nd ‘ 𝑥 ) → ( 𝑗 + 1 ) = ( ( 2nd ‘ 𝑥 ) + 1 ) ) |
| 49 |
46 47 48
|
ifbieq12d |
⊢ ( 𝑗 = ( 2nd ‘ 𝑥 ) → if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) = if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) ) |
| 50 |
49
|
opeq2d |
⊢ ( 𝑗 = ( 2nd ‘ 𝑥 ) → 〈 if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 = 〈 if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) , if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) 〉 ) |
| 51 |
|
opex |
⊢ 〈 if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) , if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) 〉 ∈ V |
| 52 |
45 50 10 51
|
ovmpo |
⊢ ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) → ( ( 1st ‘ 𝑥 ) ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ( 2nd ‘ 𝑥 ) ) = 〈 if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) , if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) 〉 ) |
| 53 |
52
|
adantl |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( 1st ‘ 𝑥 ) ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ( 2nd ‘ 𝑥 ) ) = 〈 if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) , if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) 〉 ) |
| 54 |
40 53
|
eqtrd |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) = 〈 if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) , if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) 〉 ) |
| 55 |
54
|
eleq1d |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ↔ 〈 if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) , if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) 〉 ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) |
| 56 |
|
opelxp |
⊢ ( 〈 if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) , if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) 〉 ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ↔ ( if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) ∈ ( 1 ... 𝑀 ) ∧ if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) ∈ ( 1 ... 𝑁 ) ) ) |
| 57 |
55 56
|
bitrdi |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ↔ ( if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) ∈ ( 1 ... 𝑀 ) ∧ if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) ∈ ( 1 ... 𝑁 ) ) ) ) |
| 58 |
|
ifel |
⊢ ( if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) ∈ ( 1 ... 𝑀 ) ↔ ( ( ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ∈ ( 1 ... 𝑀 ) ) ∨ ( ¬ ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑀 ) ) ) ) |
| 59 |
|
simplrl |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( 1st ‘ 𝑥 ) ∈ ℕ ) |
| 60 |
59
|
nnred |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( 1st ‘ 𝑥 ) ∈ ℝ ) |
| 61 |
16
|
nnred |
⊢ ( 𝜑 → 𝐾 ∈ ℝ ) |
| 62 |
61
|
ad3antrrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → 𝐾 ∈ ℝ ) |
| 63 |
2
|
nnred |
⊢ ( 𝜑 → 𝑀 ∈ ℝ ) |
| 64 |
63
|
ad3antrrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → 𝑀 ∈ ℝ ) |
| 65 |
|
simpr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( 1st ‘ 𝑥 ) < 𝐾 ) |
| 66 |
60 62 65
|
ltled |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( 1st ‘ 𝑥 ) ≤ 𝐾 ) |
| 67 |
|
elfzle2 |
⊢ ( 𝐾 ∈ ( 1 ... 𝑀 ) → 𝐾 ≤ 𝑀 ) |
| 68 |
4 67
|
syl |
⊢ ( 𝜑 → 𝐾 ≤ 𝑀 ) |
| 69 |
68
|
ad3antrrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → 𝐾 ≤ 𝑀 ) |
| 70 |
60 62 64 66 69
|
letrd |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( 1st ‘ 𝑥 ) ≤ 𝑀 ) |
| 71 |
59 70
|
jca |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 1st ‘ 𝑥 ) ≤ 𝑀 ) ) |
| 72 |
2
|
nnzd |
⊢ ( 𝜑 → 𝑀 ∈ ℤ ) |
| 73 |
|
fznn |
⊢ ( 𝑀 ∈ ℤ → ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... 𝑀 ) ↔ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 1st ‘ 𝑥 ) ≤ 𝑀 ) ) ) |
| 74 |
72 73
|
syl |
⊢ ( 𝜑 → ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... 𝑀 ) ↔ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 1st ‘ 𝑥 ) ≤ 𝑀 ) ) ) |
| 75 |
74
|
ad3antrrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... 𝑀 ) ↔ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 1st ‘ 𝑥 ) ≤ 𝑀 ) ) ) |
| 76 |
71 75
|
mpbird |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( 1st ‘ 𝑥 ) ∈ ( 1 ... 𝑀 ) ) |
| 77 |
60 62 64 65 69
|
ltletrd |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( 1st ‘ 𝑥 ) < 𝑀 ) |
| 78 |
2
|
ad3antrrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → 𝑀 ∈ ℕ ) |
| 79 |
|
nnltlem1 |
⊢ ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ 𝑀 ∈ ℕ ) → ( ( 1st ‘ 𝑥 ) < 𝑀 ↔ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 80 |
59 78 79
|
syl2anc |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( ( 1st ‘ 𝑥 ) < 𝑀 ↔ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 81 |
77 80
|
mpbid |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) |
| 82 |
76 81
|
2thd |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) → ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... 𝑀 ) ↔ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 83 |
82
|
pm5.32da |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ∈ ( 1 ... 𝑀 ) ) ↔ ( ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) ) |
| 84 |
|
fznn |
⊢ ( 𝑀 ∈ ℤ → ( ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑀 ) ↔ ( ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ℕ ∧ ( ( 1st ‘ 𝑥 ) + 1 ) ≤ 𝑀 ) ) ) |
| 85 |
72 84
|
syl |
⊢ ( 𝜑 → ( ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑀 ) ↔ ( ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ℕ ∧ ( ( 1st ‘ 𝑥 ) + 1 ) ≤ 𝑀 ) ) ) |
| 86 |
85
|
ad2antrr |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑀 ) ↔ ( ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ℕ ∧ ( ( 1st ‘ 𝑥 ) + 1 ) ≤ 𝑀 ) ) ) |
| 87 |
|
simprl |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( 1st ‘ 𝑥 ) ∈ ℕ ) |
| 88 |
87
|
peano2nnd |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ℕ ) |
| 89 |
88
|
biantrurd |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 1st ‘ 𝑥 ) + 1 ) ≤ 𝑀 ↔ ( ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ℕ ∧ ( ( 1st ‘ 𝑥 ) + 1 ) ≤ 𝑀 ) ) ) |
| 90 |
87
|
nnzd |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( 1st ‘ 𝑥 ) ∈ ℤ ) |
| 91 |
72
|
ad2antrr |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → 𝑀 ∈ ℤ ) |
| 92 |
|
zltp1le |
⊢ ( ( ( 1st ‘ 𝑥 ) ∈ ℤ ∧ 𝑀 ∈ ℤ ) → ( ( 1st ‘ 𝑥 ) < 𝑀 ↔ ( ( 1st ‘ 𝑥 ) + 1 ) ≤ 𝑀 ) ) |
| 93 |
|
zltlem1 |
⊢ ( ( ( 1st ‘ 𝑥 ) ∈ ℤ ∧ 𝑀 ∈ ℤ ) → ( ( 1st ‘ 𝑥 ) < 𝑀 ↔ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 94 |
92 93
|
bitr3d |
⊢ ( ( ( 1st ‘ 𝑥 ) ∈ ℤ ∧ 𝑀 ∈ ℤ ) → ( ( ( 1st ‘ 𝑥 ) + 1 ) ≤ 𝑀 ↔ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 95 |
90 91 94
|
syl2anc |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 1st ‘ 𝑥 ) + 1 ) ≤ 𝑀 ↔ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 96 |
86 89 95
|
3bitr2d |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑀 ) ↔ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 97 |
96
|
anbi2d |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ¬ ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑀 ) ) ↔ ( ¬ ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) ) |
| 98 |
83 97
|
orbi12d |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ∈ ( 1 ... 𝑀 ) ) ∨ ( ¬ ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑀 ) ) ) ↔ ( ( ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ∨ ( ¬ ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) ) ) |
| 99 |
|
pm4.42 |
⊢ ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ↔ ( ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) ∨ ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ¬ ( 1st ‘ 𝑥 ) < 𝐾 ) ) ) |
| 100 |
|
ancom |
⊢ ( ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) ↔ ( ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 101 |
|
ancom |
⊢ ( ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ¬ ( 1st ‘ 𝑥 ) < 𝐾 ) ↔ ( ¬ ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 102 |
100 101
|
orbi12i |
⊢ ( ( ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ( 1st ‘ 𝑥 ) < 𝐾 ) ∨ ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ¬ ( 1st ‘ 𝑥 ) < 𝐾 ) ) ↔ ( ( ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ∨ ( ¬ ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) ) |
| 103 |
99 102
|
bitri |
⊢ ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ↔ ( ( ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ∨ ( ¬ ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) ) |
| 104 |
98 103
|
bitr4di |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( 1st ‘ 𝑥 ) ∈ ( 1 ... 𝑀 ) ) ∨ ( ¬ ( 1st ‘ 𝑥 ) < 𝐾 ∧ ( ( 1st ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑀 ) ) ) ↔ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 105 |
58 104
|
bitrid |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) ∈ ( 1 ... 𝑀 ) ↔ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) |
| 106 |
|
ifel |
⊢ ( if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) ∈ ( 1 ... 𝑁 ) ↔ ( ( ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ∈ ( 1 ... 𝑁 ) ) ∨ ( ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑁 ) ) ) ) |
| 107 |
|
simplrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( 2nd ‘ 𝑥 ) ∈ ℕ ) |
| 108 |
107
|
nnred |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( 2nd ‘ 𝑥 ) ∈ ℝ ) |
| 109 |
18
|
nnred |
⊢ ( 𝜑 → 𝐿 ∈ ℝ ) |
| 110 |
109
|
ad3antrrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → 𝐿 ∈ ℝ ) |
| 111 |
3
|
nnred |
⊢ ( 𝜑 → 𝑁 ∈ ℝ ) |
| 112 |
111
|
ad3antrrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → 𝑁 ∈ ℝ ) |
| 113 |
|
simpr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( 2nd ‘ 𝑥 ) < 𝐿 ) |
| 114 |
108 110 113
|
ltled |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( 2nd ‘ 𝑥 ) ≤ 𝐿 ) |
| 115 |
|
elfzle2 |
⊢ ( 𝐿 ∈ ( 1 ... 𝑁 ) → 𝐿 ≤ 𝑁 ) |
| 116 |
5 115
|
syl |
⊢ ( 𝜑 → 𝐿 ≤ 𝑁 ) |
| 117 |
116
|
ad3antrrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → 𝐿 ≤ 𝑁 ) |
| 118 |
108 110 112 114 117
|
letrd |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( 2nd ‘ 𝑥 ) ≤ 𝑁 ) |
| 119 |
107 118
|
jca |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( ( 2nd ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ≤ 𝑁 ) ) |
| 120 |
3
|
nnzd |
⊢ ( 𝜑 → 𝑁 ∈ ℤ ) |
| 121 |
|
fznn |
⊢ ( 𝑁 ∈ ℤ → ( ( 2nd ‘ 𝑥 ) ∈ ( 1 ... 𝑁 ) ↔ ( ( 2nd ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ≤ 𝑁 ) ) ) |
| 122 |
120 121
|
syl |
⊢ ( 𝜑 → ( ( 2nd ‘ 𝑥 ) ∈ ( 1 ... 𝑁 ) ↔ ( ( 2nd ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ≤ 𝑁 ) ) ) |
| 123 |
122
|
ad3antrrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( ( 2nd ‘ 𝑥 ) ∈ ( 1 ... 𝑁 ) ↔ ( ( 2nd ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ≤ 𝑁 ) ) ) |
| 124 |
119 123
|
mpbird |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( 2nd ‘ 𝑥 ) ∈ ( 1 ... 𝑁 ) ) |
| 125 |
108 110 112 113 117
|
ltletrd |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( 2nd ‘ 𝑥 ) < 𝑁 ) |
| 126 |
3
|
ad3antrrr |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → 𝑁 ∈ ℕ ) |
| 127 |
|
nnltlem1 |
⊢ ( ( ( 2nd ‘ 𝑥 ) ∈ ℕ ∧ 𝑁 ∈ ℕ ) → ( ( 2nd ‘ 𝑥 ) < 𝑁 ↔ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 128 |
107 126 127
|
syl2anc |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( ( 2nd ‘ 𝑥 ) < 𝑁 ↔ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 129 |
125 128
|
mpbid |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) |
| 130 |
124 129
|
2thd |
⊢ ( ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) → ( ( 2nd ‘ 𝑥 ) ∈ ( 1 ... 𝑁 ) ↔ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 131 |
130
|
pm5.32da |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ∈ ( 1 ... 𝑁 ) ) ↔ ( ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) |
| 132 |
|
fznn |
⊢ ( 𝑁 ∈ ℤ → ( ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑁 ) ↔ ( ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ℕ ∧ ( ( 2nd ‘ 𝑥 ) + 1 ) ≤ 𝑁 ) ) ) |
| 133 |
120 132
|
syl |
⊢ ( 𝜑 → ( ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑁 ) ↔ ( ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ℕ ∧ ( ( 2nd ‘ 𝑥 ) + 1 ) ≤ 𝑁 ) ) ) |
| 134 |
133
|
ad2antrr |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑁 ) ↔ ( ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ℕ ∧ ( ( 2nd ‘ 𝑥 ) + 1 ) ≤ 𝑁 ) ) ) |
| 135 |
|
simprr |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( 2nd ‘ 𝑥 ) ∈ ℕ ) |
| 136 |
135
|
peano2nnd |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ℕ ) |
| 137 |
136
|
biantrurd |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 2nd ‘ 𝑥 ) + 1 ) ≤ 𝑁 ↔ ( ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ℕ ∧ ( ( 2nd ‘ 𝑥 ) + 1 ) ≤ 𝑁 ) ) ) |
| 138 |
135
|
nnzd |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( 2nd ‘ 𝑥 ) ∈ ℤ ) |
| 139 |
120
|
ad2antrr |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → 𝑁 ∈ ℤ ) |
| 140 |
|
zltp1le |
⊢ ( ( ( 2nd ‘ 𝑥 ) ∈ ℤ ∧ 𝑁 ∈ ℤ ) → ( ( 2nd ‘ 𝑥 ) < 𝑁 ↔ ( ( 2nd ‘ 𝑥 ) + 1 ) ≤ 𝑁 ) ) |
| 141 |
|
zltlem1 |
⊢ ( ( ( 2nd ‘ 𝑥 ) ∈ ℤ ∧ 𝑁 ∈ ℤ ) → ( ( 2nd ‘ 𝑥 ) < 𝑁 ↔ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 142 |
140 141
|
bitr3d |
⊢ ( ( ( 2nd ‘ 𝑥 ) ∈ ℤ ∧ 𝑁 ∈ ℤ ) → ( ( ( 2nd ‘ 𝑥 ) + 1 ) ≤ 𝑁 ↔ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 143 |
138 139 142
|
syl2anc |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 2nd ‘ 𝑥 ) + 1 ) ≤ 𝑁 ↔ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 144 |
134 137 143
|
3bitr2d |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑁 ) ↔ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 145 |
144
|
anbi2d |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑁 ) ) ↔ ( ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) |
| 146 |
131 145
|
orbi12d |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ∈ ( 1 ... 𝑁 ) ) ∨ ( ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑁 ) ) ) ↔ ( ( ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ∨ ( ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) ) |
| 147 |
|
pm4.42 |
⊢ ( ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ↔ ( ( ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) ∨ ( ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ∧ ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ) ) ) |
| 148 |
|
ancom |
⊢ ( ( ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) ↔ ( ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 149 |
|
ancom |
⊢ ( ( ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ∧ ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ) ↔ ( ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 150 |
148 149
|
orbi12i |
⊢ ( ( ( ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ∧ ( 2nd ‘ 𝑥 ) < 𝐿 ) ∨ ( ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ∧ ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ) ) ↔ ( ( ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ∨ ( ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) |
| 151 |
147 150
|
bitri |
⊢ ( ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ↔ ( ( ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ∨ ( ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) |
| 152 |
146 151
|
bitr4di |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( 2nd ‘ 𝑥 ) ∈ ( 1 ... 𝑁 ) ) ∨ ( ¬ ( 2nd ‘ 𝑥 ) < 𝐿 ∧ ( ( 2nd ‘ 𝑥 ) + 1 ) ∈ ( 1 ... 𝑁 ) ) ) ↔ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 153 |
106 152
|
bitrid |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) ∈ ( 1 ... 𝑁 ) ↔ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) |
| 154 |
105 153
|
anbi12d |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( if ( ( 1st ‘ 𝑥 ) < 𝐾 , ( 1st ‘ 𝑥 ) , ( ( 1st ‘ 𝑥 ) + 1 ) ) ∈ ( 1 ... 𝑀 ) ∧ if ( ( 2nd ‘ 𝑥 ) < 𝐿 , ( 2nd ‘ 𝑥 ) , ( ( 2nd ‘ 𝑥 ) + 1 ) ) ∈ ( 1 ... 𝑁 ) ) ↔ ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) |
| 155 |
57 154
|
bitrd |
⊢ ( ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) → ( ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ↔ ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) |
| 156 |
155
|
pm5.32da |
⊢ ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) → ( ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ↔ ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ∧ ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) ) |
| 157 |
|
1zzd |
⊢ ( 𝜑 → 1 ∈ ℤ ) |
| 158 |
72 157
|
zsubcld |
⊢ ( 𝜑 → ( 𝑀 − 1 ) ∈ ℤ ) |
| 159 |
|
fznn |
⊢ ( ( 𝑀 − 1 ) ∈ ℤ → ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... ( 𝑀 − 1 ) ) ↔ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) ) |
| 160 |
158 159
|
syl |
⊢ ( 𝜑 → ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... ( 𝑀 − 1 ) ) ↔ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ) ) |
| 161 |
120 157
|
zsubcld |
⊢ ( 𝜑 → ( 𝑁 − 1 ) ∈ ℤ ) |
| 162 |
|
fznn |
⊢ ( ( 𝑁 − 1 ) ∈ ℤ → ( ( 2nd ‘ 𝑥 ) ∈ ( 1 ... ( 𝑁 − 1 ) ) ↔ ( ( 2nd ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) |
| 163 |
161 162
|
syl |
⊢ ( 𝜑 → ( ( 2nd ‘ 𝑥 ) ∈ ( 1 ... ( 𝑁 − 1 ) ) ↔ ( ( 2nd ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) |
| 164 |
160 163
|
anbi12d |
⊢ ( 𝜑 → ( ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... ( 𝑀 − 1 ) ) ∧ ( 2nd ‘ 𝑥 ) ∈ ( 1 ... ( 𝑁 − 1 ) ) ) ↔ ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ∧ ( ( 2nd ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) ) |
| 165 |
|
an4 |
⊢ ( ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ) ∧ ( ( 2nd ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ↔ ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ∧ ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) |
| 166 |
164 165
|
bitrdi |
⊢ ( 𝜑 → ( ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... ( 𝑀 − 1 ) ) ∧ ( 2nd ‘ 𝑥 ) ∈ ( 1 ... ( 𝑁 − 1 ) ) ) ↔ ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ∧ ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) ) |
| 167 |
166
|
adantr |
⊢ ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) → ( ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... ( 𝑀 − 1 ) ) ∧ ( 2nd ‘ 𝑥 ) ∈ ( 1 ... ( 𝑁 − 1 ) ) ) ↔ ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ∧ ( ( 1st ‘ 𝑥 ) ≤ ( 𝑀 − 1 ) ∧ ( 2nd ‘ 𝑥 ) ≤ ( 𝑁 − 1 ) ) ) ) ) |
| 168 |
156 167
|
bitr4d |
⊢ ( ( 𝜑 ∧ 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ) → ( ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ↔ ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... ( 𝑀 − 1 ) ) ∧ ( 2nd ‘ 𝑥 ) ∈ ( 1 ... ( 𝑁 − 1 ) ) ) ) ) |
| 169 |
168
|
pm5.32da |
⊢ ( 𝜑 → ( ( 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ∧ ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) ↔ ( 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ∧ ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... ( 𝑀 − 1 ) ) ∧ ( 2nd ‘ 𝑥 ) ∈ ( 1 ... ( 𝑁 − 1 ) ) ) ) ) ) |
| 170 |
|
elxp6 |
⊢ ( 𝑥 ∈ ( ℕ × ℕ ) ↔ ( 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ) |
| 171 |
170
|
anbi1i |
⊢ ( ( 𝑥 ∈ ( ℕ × ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ↔ ( ( 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) |
| 172 |
|
anass |
⊢ ( ( ( 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ∧ ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ↔ ( 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ∧ ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) ) |
| 173 |
171 172
|
bitri |
⊢ ( ( 𝑥 ∈ ( ℕ × ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ↔ ( 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ∧ ( ( ( 1st ‘ 𝑥 ) ∈ ℕ ∧ ( 2nd ‘ 𝑥 ) ∈ ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ) ) |
| 174 |
|
elxp6 |
⊢ ( 𝑥 ∈ ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ↔ ( 𝑥 = 〈 ( 1st ‘ 𝑥 ) , ( 2nd ‘ 𝑥 ) 〉 ∧ ( ( 1st ‘ 𝑥 ) ∈ ( 1 ... ( 𝑀 − 1 ) ) ∧ ( 2nd ‘ 𝑥 ) ∈ ( 1 ... ( 𝑁 − 1 ) ) ) ) ) |
| 175 |
169 173 174
|
3bitr4g |
⊢ ( 𝜑 → ( ( 𝑥 ∈ ( ℕ × ℕ ) ∧ ( ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ‘ 𝑥 ) ∈ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) ↔ 𝑥 ∈ ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ) ) |
| 176 |
31 36 175
|
3bitrd |
⊢ ( 𝜑 → ( 𝑥 ∈ ( ◡ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) “ dom 𝐴 ) ↔ 𝑥 ∈ ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ) ) |
| 177 |
176
|
eqrdv |
⊢ ( 𝜑 → ( ◡ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) “ dom 𝐴 ) = ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ) |
| 178 |
27 177
|
eqtrid |
⊢ ( 𝜑 → dom ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) = ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ) |
| 179 |
26 178
|
eqtrd |
⊢ ( 𝜑 → dom 𝑆 = ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ) |
| 180 |
179
|
feq2d |
⊢ ( 𝜑 → ( 𝑆 : dom 𝑆 ⟶ ran 𝑆 ↔ 𝑆 : ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ⟶ ran 𝑆 ) ) |
| 181 |
25 180
|
mpbid |
⊢ ( 𝜑 → 𝑆 : ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ⟶ ran 𝑆 ) |
| 182 |
21
|
rneqd |
⊢ ( 𝜑 → ran 𝑆 = ran ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) ) |
| 183 |
|
rncoss |
⊢ ran ( 𝐴 ∘ ( 𝑖 ∈ ℕ , 𝑗 ∈ ℕ ↦ 〈 if ( 𝑖 < 𝐾 , 𝑖 , ( 𝑖 + 1 ) ) , if ( 𝑗 < 𝐿 , 𝑗 , ( 𝑗 + 1 ) ) 〉 ) ) ⊆ ran 𝐴 |
| 184 |
182 183
|
eqsstrdi |
⊢ ( 𝜑 → ran 𝑆 ⊆ ran 𝐴 ) |
| 185 |
|
frn |
⊢ ( 𝐴 : ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ⟶ 𝐵 → ran 𝐴 ⊆ 𝐵 ) |
| 186 |
6 7 185
|
3syl |
⊢ ( 𝜑 → ran 𝐴 ⊆ 𝐵 ) |
| 187 |
184 186
|
sstrd |
⊢ ( 𝜑 → ran 𝑆 ⊆ 𝐵 ) |
| 188 |
|
fss |
⊢ ( ( 𝑆 : ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ⟶ ran 𝑆 ∧ ran 𝑆 ⊆ 𝐵 ) → 𝑆 : ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ⟶ 𝐵 ) |
| 189 |
181 187 188
|
syl2anc |
⊢ ( 𝜑 → 𝑆 : ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ⟶ 𝐵 ) |
| 190 |
|
reldmmap |
⊢ Rel dom ↑m |
| 191 |
190
|
ovrcl |
⊢ ( 𝐴 ∈ ( 𝐵 ↑m ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ) → ( 𝐵 ∈ V ∧ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ∈ V ) ) |
| 192 |
6 191
|
syl |
⊢ ( 𝜑 → ( 𝐵 ∈ V ∧ ( ( 1 ... 𝑀 ) × ( 1 ... 𝑁 ) ) ∈ V ) ) |
| 193 |
192
|
simpld |
⊢ ( 𝜑 → 𝐵 ∈ V ) |
| 194 |
|
ovex |
⊢ ( 1 ... ( 𝑀 − 1 ) ) ∈ V |
| 195 |
|
ovex |
⊢ ( 1 ... ( 𝑁 − 1 ) ) ∈ V |
| 196 |
194 195
|
xpex |
⊢ ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ∈ V |
| 197 |
|
elmapg |
⊢ ( ( 𝐵 ∈ V ∧ ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ∈ V ) → ( 𝑆 ∈ ( 𝐵 ↑m ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ) ↔ 𝑆 : ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ⟶ 𝐵 ) ) |
| 198 |
193 196 197
|
sylancl |
⊢ ( 𝜑 → ( 𝑆 ∈ ( 𝐵 ↑m ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ) ↔ 𝑆 : ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ⟶ 𝐵 ) ) |
| 199 |
189 198
|
mpbird |
⊢ ( 𝜑 → 𝑆 ∈ ( 𝐵 ↑m ( ( 1 ... ( 𝑀 − 1 ) ) × ( 1 ... ( 𝑁 − 1 ) ) ) ) ) |