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
|
syl5eq |
⊢ ( 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
|
syl5bb |
⊢ ( ( ( 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
|
syl5bb |
⊢ ( ( ( 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
|
syl5eq |
⊢ ( 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 ) ) ) ) ) |