Step |
Hyp |
Ref |
Expression |
1 |
|
metakunt18.1 |
⊢ ( 𝜑 → 𝑀 ∈ ℕ ) |
2 |
|
metakunt18.2 |
⊢ ( 𝜑 → 𝐼 ∈ ℕ ) |
3 |
|
metakunt18.3 |
⊢ ( 𝜑 → 𝐼 ≤ 𝑀 ) |
4 |
2
|
nnred |
⊢ ( 𝜑 → 𝐼 ∈ ℝ ) |
5 |
4
|
ltm1d |
⊢ ( 𝜑 → ( 𝐼 − 1 ) < 𝐼 ) |
6 |
|
fzdisj |
⊢ ( ( 𝐼 − 1 ) < 𝐼 → ( ( 1 ... ( 𝐼 − 1 ) ) ∩ ( 𝐼 ... ( 𝑀 − 1 ) ) ) = ∅ ) |
7 |
5 6
|
syl |
⊢ ( 𝜑 → ( ( 1 ... ( 𝐼 − 1 ) ) ∩ ( 𝐼 ... ( 𝑀 − 1 ) ) ) = ∅ ) |
8 |
1
|
nnzd |
⊢ ( 𝜑 → 𝑀 ∈ ℤ ) |
9 |
|
fzsn |
⊢ ( 𝑀 ∈ ℤ → ( 𝑀 ... 𝑀 ) = { 𝑀 } ) |
10 |
8 9
|
syl |
⊢ ( 𝜑 → ( 𝑀 ... 𝑀 ) = { 𝑀 } ) |
11 |
10
|
eqcomd |
⊢ ( 𝜑 → { 𝑀 } = ( 𝑀 ... 𝑀 ) ) |
12 |
11
|
ineq2d |
⊢ ( 𝜑 → ( ( 1 ... ( 𝐼 − 1 ) ) ∩ { 𝑀 } ) = ( ( 1 ... ( 𝐼 − 1 ) ) ∩ ( 𝑀 ... 𝑀 ) ) ) |
13 |
2
|
nnzd |
⊢ ( 𝜑 → 𝐼 ∈ ℤ ) |
14 |
|
zlem1lt |
⊢ ( ( 𝐼 ∈ ℤ ∧ 𝑀 ∈ ℤ ) → ( 𝐼 ≤ 𝑀 ↔ ( 𝐼 − 1 ) < 𝑀 ) ) |
15 |
13 8 14
|
syl2anc |
⊢ ( 𝜑 → ( 𝐼 ≤ 𝑀 ↔ ( 𝐼 − 1 ) < 𝑀 ) ) |
16 |
3 15
|
mpbid |
⊢ ( 𝜑 → ( 𝐼 − 1 ) < 𝑀 ) |
17 |
|
fzdisj |
⊢ ( ( 𝐼 − 1 ) < 𝑀 → ( ( 1 ... ( 𝐼 − 1 ) ) ∩ ( 𝑀 ... 𝑀 ) ) = ∅ ) |
18 |
16 17
|
syl |
⊢ ( 𝜑 → ( ( 1 ... ( 𝐼 − 1 ) ) ∩ ( 𝑀 ... 𝑀 ) ) = ∅ ) |
19 |
12 18
|
eqtrd |
⊢ ( 𝜑 → ( ( 1 ... ( 𝐼 − 1 ) ) ∩ { 𝑀 } ) = ∅ ) |
20 |
11
|
ineq2d |
⊢ ( 𝜑 → ( ( 𝐼 ... ( 𝑀 − 1 ) ) ∩ { 𝑀 } ) = ( ( 𝐼 ... ( 𝑀 − 1 ) ) ∩ ( 𝑀 ... 𝑀 ) ) ) |
21 |
1
|
nnred |
⊢ ( 𝜑 → 𝑀 ∈ ℝ ) |
22 |
21
|
ltm1d |
⊢ ( 𝜑 → ( 𝑀 − 1 ) < 𝑀 ) |
23 |
|
fzdisj |
⊢ ( ( 𝑀 − 1 ) < 𝑀 → ( ( 𝐼 ... ( 𝑀 − 1 ) ) ∩ ( 𝑀 ... 𝑀 ) ) = ∅ ) |
24 |
22 23
|
syl |
⊢ ( 𝜑 → ( ( 𝐼 ... ( 𝑀 − 1 ) ) ∩ ( 𝑀 ... 𝑀 ) ) = ∅ ) |
25 |
20 24
|
eqtrd |
⊢ ( 𝜑 → ( ( 𝐼 ... ( 𝑀 − 1 ) ) ∩ { 𝑀 } ) = ∅ ) |
26 |
7 19 25
|
3jca |
⊢ ( 𝜑 → ( ( ( 1 ... ( 𝐼 − 1 ) ) ∩ ( 𝐼 ... ( 𝑀 − 1 ) ) ) = ∅ ∧ ( ( 1 ... ( 𝐼 − 1 ) ) ∩ { 𝑀 } ) = ∅ ∧ ( ( 𝐼 ... ( 𝑀 − 1 ) ) ∩ { 𝑀 } ) = ∅ ) ) |
27 |
|
incom |
⊢ ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ ( 1 ... ( 𝑀 − 𝐼 ) ) ) = ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ) |
28 |
27
|
a1i |
⊢ ( 𝜑 → ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ ( 1 ... ( 𝑀 − 𝐼 ) ) ) = ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ) ) |
29 |
21 4
|
resubcld |
⊢ ( 𝜑 → ( 𝑀 − 𝐼 ) ∈ ℝ ) |
30 |
29
|
ltp1d |
⊢ ( 𝜑 → ( 𝑀 − 𝐼 ) < ( ( 𝑀 − 𝐼 ) + 1 ) ) |
31 |
|
fzdisj |
⊢ ( ( 𝑀 − 𝐼 ) < ( ( 𝑀 − 𝐼 ) + 1 ) → ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ) = ∅ ) |
32 |
30 31
|
syl |
⊢ ( 𝜑 → ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ) = ∅ ) |
33 |
28 32
|
eqtrd |
⊢ ( 𝜑 → ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ ( 1 ... ( 𝑀 − 𝐼 ) ) ) = ∅ ) |
34 |
11
|
ineq2d |
⊢ ( 𝜑 → ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ { 𝑀 } ) = ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ ( 𝑀 ... 𝑀 ) ) ) |
35 |
|
fzdisj |
⊢ ( ( 𝑀 − 1 ) < 𝑀 → ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ ( 𝑀 ... 𝑀 ) ) = ∅ ) |
36 |
22 35
|
syl |
⊢ ( 𝜑 → ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ ( 𝑀 ... 𝑀 ) ) = ∅ ) |
37 |
34 36
|
eqtrd |
⊢ ( 𝜑 → ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ { 𝑀 } ) = ∅ ) |
38 |
11
|
ineq2d |
⊢ ( 𝜑 → ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ { 𝑀 } ) = ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ ( 𝑀 ... 𝑀 ) ) ) |
39 |
2
|
nnrpd |
⊢ ( 𝜑 → 𝐼 ∈ ℝ+ ) |
40 |
21 39
|
ltsubrpd |
⊢ ( 𝜑 → ( 𝑀 − 𝐼 ) < 𝑀 ) |
41 |
|
fzdisj |
⊢ ( ( 𝑀 − 𝐼 ) < 𝑀 → ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ ( 𝑀 ... 𝑀 ) ) = ∅ ) |
42 |
40 41
|
syl |
⊢ ( 𝜑 → ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ ( 𝑀 ... 𝑀 ) ) = ∅ ) |
43 |
38 42
|
eqtrd |
⊢ ( 𝜑 → ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ { 𝑀 } ) = ∅ ) |
44 |
33 37 43
|
3jca |
⊢ ( 𝜑 → ( ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ ( 1 ... ( 𝑀 − 𝐼 ) ) ) = ∅ ∧ ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ { 𝑀 } ) = ∅ ∧ ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ { 𝑀 } ) = ∅ ) ) |
45 |
26 44
|
jca |
⊢ ( 𝜑 → ( ( ( ( 1 ... ( 𝐼 − 1 ) ) ∩ ( 𝐼 ... ( 𝑀 − 1 ) ) ) = ∅ ∧ ( ( 1 ... ( 𝐼 − 1 ) ) ∩ { 𝑀 } ) = ∅ ∧ ( ( 𝐼 ... ( 𝑀 − 1 ) ) ∩ { 𝑀 } ) = ∅ ) ∧ ( ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ ( 1 ... ( 𝑀 − 𝐼 ) ) ) = ∅ ∧ ( ( ( ( 𝑀 − 𝐼 ) + 1 ) ... ( 𝑀 − 1 ) ) ∩ { 𝑀 } ) = ∅ ∧ ( ( 1 ... ( 𝑀 − 𝐼 ) ) ∩ { 𝑀 } ) = ∅ ) ) ) |