| Step |
Hyp |
Ref |
Expression |
| 1 |
|
elfzo2nn |
⊢ ( 𝑀 ∈ ( 2 ..^ 𝑁 ) → 𝑀 ∈ ℕ ) |
| 2 |
|
nndivides |
⊢ ( ( 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ ) → ( 𝑀 ∥ 𝑁 ↔ ∃ 𝑛 ∈ ℕ ( 𝑛 · 𝑀 ) = 𝑁 ) ) |
| 3 |
1 2
|
sylan |
⊢ ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) → ( 𝑀 ∥ 𝑁 ↔ ∃ 𝑛 ∈ ℕ ( 𝑛 · 𝑀 ) = 𝑁 ) ) |
| 4 |
|
oveq1 |
⊢ ( 𝑛 = 𝑚 → ( 𝑛 · 𝑀 ) = ( 𝑚 · 𝑀 ) ) |
| 5 |
4
|
eqeq1d |
⊢ ( 𝑛 = 𝑚 → ( ( 𝑛 · 𝑀 ) = 𝑁 ↔ ( 𝑚 · 𝑀 ) = 𝑁 ) ) |
| 6 |
5
|
cbvrexvw |
⊢ ( ∃ 𝑛 ∈ ℕ ( 𝑛 · 𝑀 ) = 𝑁 ↔ ∃ 𝑚 ∈ ℕ ( 𝑚 · 𝑀 ) = 𝑁 ) |
| 7 |
|
simplll |
⊢ ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) → 𝑀 ∈ ( 2 ..^ 𝑁 ) ) |
| 8 |
|
simpr |
⊢ ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) → 𝑚 ∈ ℕ ) |
| 9 |
8
|
adantr |
⊢ ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) → 𝑚 ∈ ℕ ) |
| 10 |
1
|
adantr |
⊢ ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) → 𝑀 ∈ ℕ ) |
| 11 |
10
|
anim1i |
⊢ ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) → ( 𝑀 ∈ ℕ ∧ 𝑚 ∈ ℕ ) ) |
| 12 |
11
|
adantr |
⊢ ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) → ( 𝑀 ∈ ℕ ∧ 𝑚 ∈ ℕ ) ) |
| 13 |
|
nnmulcom |
⊢ ( ( 𝑀 ∈ ℕ ∧ 𝑚 ∈ ℕ ) → ( 𝑀 · 𝑚 ) = ( 𝑚 · 𝑀 ) ) |
| 14 |
12 13
|
syl |
⊢ ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) → ( 𝑀 · 𝑚 ) = ( 𝑚 · 𝑀 ) ) |
| 15 |
|
simpr |
⊢ ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) → ( 𝑚 · 𝑀 ) = 𝑁 ) |
| 16 |
14 15
|
eqtrd |
⊢ ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) → ( 𝑀 · 𝑚 ) = 𝑁 ) |
| 17 |
|
nnmul2 |
⊢ ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑚 ∈ ℕ ∧ ( 𝑀 · 𝑚 ) = 𝑁 ) → 𝑚 ∈ ( 2 ..^ 𝑁 ) ) |
| 18 |
7 9 16 17
|
syl3anc |
⊢ ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) → 𝑚 ∈ ( 2 ..^ 𝑁 ) ) |
| 19 |
|
simpr |
⊢ ( ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) ∧ 𝑚 ∈ ( 2 ..^ 𝑁 ) ) → 𝑚 ∈ ( 2 ..^ 𝑁 ) ) |
| 20 |
5
|
adantl |
⊢ ( ( ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) ∧ 𝑚 ∈ ( 2 ..^ 𝑁 ) ) ∧ 𝑛 = 𝑚 ) → ( ( 𝑛 · 𝑀 ) = 𝑁 ↔ ( 𝑚 · 𝑀 ) = 𝑁 ) ) |
| 21 |
15
|
adantr |
⊢ ( ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) ∧ 𝑚 ∈ ( 2 ..^ 𝑁 ) ) → ( 𝑚 · 𝑀 ) = 𝑁 ) |
| 22 |
19 20 21
|
rspcedvd |
⊢ ( ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) ∧ 𝑚 ∈ ( 2 ..^ 𝑁 ) ) → ∃ 𝑛 ∈ ( 2 ..^ 𝑁 ) ( 𝑛 · 𝑀 ) = 𝑁 ) |
| 23 |
18 22
|
mpdan |
⊢ ( ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) ∧ ( 𝑚 · 𝑀 ) = 𝑁 ) → ∃ 𝑛 ∈ ( 2 ..^ 𝑁 ) ( 𝑛 · 𝑀 ) = 𝑁 ) |
| 24 |
23
|
ex |
⊢ ( ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) ∧ 𝑚 ∈ ℕ ) → ( ( 𝑚 · 𝑀 ) = 𝑁 → ∃ 𝑛 ∈ ( 2 ..^ 𝑁 ) ( 𝑛 · 𝑀 ) = 𝑁 ) ) |
| 25 |
24
|
rexlimdva |
⊢ ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) → ( ∃ 𝑚 ∈ ℕ ( 𝑚 · 𝑀 ) = 𝑁 → ∃ 𝑛 ∈ ( 2 ..^ 𝑁 ) ( 𝑛 · 𝑀 ) = 𝑁 ) ) |
| 26 |
6 25
|
biimtrid |
⊢ ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) → ( ∃ 𝑛 ∈ ℕ ( 𝑛 · 𝑀 ) = 𝑁 → ∃ 𝑛 ∈ ( 2 ..^ 𝑁 ) ( 𝑛 · 𝑀 ) = 𝑁 ) ) |
| 27 |
|
fzossnn |
⊢ ( 1 ..^ 𝑁 ) ⊆ ℕ |
| 28 |
|
2eluzge1 |
⊢ 2 ∈ ( ℤ≥ ‘ 1 ) |
| 29 |
|
fzoss1 |
⊢ ( 2 ∈ ( ℤ≥ ‘ 1 ) → ( 2 ..^ 𝑁 ) ⊆ ( 1 ..^ 𝑁 ) ) |
| 30 |
28 29
|
mp1i |
⊢ ( ( 1 ..^ 𝑁 ) ⊆ ℕ → ( 2 ..^ 𝑁 ) ⊆ ( 1 ..^ 𝑁 ) ) |
| 31 |
|
id |
⊢ ( ( 1 ..^ 𝑁 ) ⊆ ℕ → ( 1 ..^ 𝑁 ) ⊆ ℕ ) |
| 32 |
30 31
|
sstrd |
⊢ ( ( 1 ..^ 𝑁 ) ⊆ ℕ → ( 2 ..^ 𝑁 ) ⊆ ℕ ) |
| 33 |
27 32
|
ax-mp |
⊢ ( 2 ..^ 𝑁 ) ⊆ ℕ |
| 34 |
|
ssrexv |
⊢ ( ( 2 ..^ 𝑁 ) ⊆ ℕ → ( ∃ 𝑛 ∈ ( 2 ..^ 𝑁 ) ( 𝑛 · 𝑀 ) = 𝑁 → ∃ 𝑛 ∈ ℕ ( 𝑛 · 𝑀 ) = 𝑁 ) ) |
| 35 |
33 34
|
mp1i |
⊢ ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) → ( ∃ 𝑛 ∈ ( 2 ..^ 𝑁 ) ( 𝑛 · 𝑀 ) = 𝑁 → ∃ 𝑛 ∈ ℕ ( 𝑛 · 𝑀 ) = 𝑁 ) ) |
| 36 |
26 35
|
impbid |
⊢ ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) → ( ∃ 𝑛 ∈ ℕ ( 𝑛 · 𝑀 ) = 𝑁 ↔ ∃ 𝑛 ∈ ( 2 ..^ 𝑁 ) ( 𝑛 · 𝑀 ) = 𝑁 ) ) |
| 37 |
3 36
|
bitrd |
⊢ ( ( 𝑀 ∈ ( 2 ..^ 𝑁 ) ∧ 𝑁 ∈ ℕ ) → ( 𝑀 ∥ 𝑁 ↔ ∃ 𝑛 ∈ ( 2 ..^ 𝑁 ) ( 𝑛 · 𝑀 ) = 𝑁 ) ) |