| Step | Hyp | Ref
| Expression |
| 1 | | fzssz 13475 |
. . . . . . . . 9
⊢ (𝑀...𝑁) ⊆ ℤ |
| 2 | | zssre 12526 |
. . . . . . . . 9
⊢ ℤ
⊆ ℝ |
| 3 | 1, 2 | sstri 3926 |
. . . . . . . 8
⊢ (𝑀...𝑁) ⊆ ℝ |
| 4 | | ltso 11221 |
. . . . . . . 8
⊢ < Or
ℝ |
| 5 | | soss 5549 |
. . . . . . . 8
⊢ ((𝑀...𝑁) ⊆ ℝ → ( < Or ℝ
→ < Or (𝑀...𝑁))) |
| 6 | 3, 4, 5 | mp2 9 |
. . . . . . 7
⊢ < Or
(𝑀...𝑁) |
| 7 | | fzfi 13929 |
. . . . . . 7
⊢ (𝑀...𝑁) ∈ Fin |
| 8 | | fz1iso 14419 |
. . . . . . 7
⊢ (( <
Or (𝑀...𝑁) ∧ (𝑀...𝑁) ∈ Fin) → ∃ℎ ℎ Isom < , < ((1...(♯‘(𝑀...𝑁))), (𝑀...𝑁))) |
| 9 | 6, 7, 8 | mp2an 699 |
. . . . . 6
⊢
∃ℎ ℎ Isom < , <
((1...(♯‘(𝑀...𝑁))), (𝑀...𝑁)) |
| 10 | | fzisoeu.4 |
. . . . . . . . . . . . . . . 16
⊢ 𝑁 = ((♯‘𝐻) + (𝑀 − 1)) |
| 11 | | fveq2 6831 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝐻 = ∅ →
(♯‘𝐻) =
(♯‘∅)) |
| 12 | | hash0 14324 |
. . . . . . . . . . . . . . . . . 18
⊢
(♯‘∅) = 0 |
| 13 | 11, 12 | eqtrdi 2792 |
. . . . . . . . . . . . . . . . 17
⊢ (𝐻 = ∅ →
(♯‘𝐻) =
0) |
| 14 | 13 | oveq1d 7375 |
. . . . . . . . . . . . . . . 16
⊢ (𝐻 = ∅ →
((♯‘𝐻) + (𝑀 − 1)) = (0 + (𝑀 − 1))) |
| 15 | 10, 14 | eqtrid 2788 |
. . . . . . . . . . . . . . 15
⊢ (𝐻 = ∅ → 𝑁 = (0 + (𝑀 − 1))) |
| 16 | 15 | oveq2d 7376 |
. . . . . . . . . . . . . 14
⊢ (𝐻 = ∅ → (𝑀...𝑁) = (𝑀...(0 + (𝑀 − 1)))) |
| 17 | 16 | adantl 483 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝐻 = ∅) → (𝑀...𝑁) = (𝑀...(0 + (𝑀 − 1)))) |
| 18 | | fzisoeu.m |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝜑 → 𝑀 ∈ ℤ) |
| 19 | 18 | zcnd 12629 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝜑 → 𝑀 ∈ ℂ) |
| 20 | | 1cnd 11134 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝜑 → 1 ∈
ℂ) |
| 21 | 19, 20 | subcld 11500 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → (𝑀 − 1) ∈ ℂ) |
| 22 | 21 | addlidd 11342 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → (0 + (𝑀 − 1)) = (𝑀 − 1)) |
| 23 | 22 | oveq2d 7376 |
. . . . . . . . . . . . . . 15
⊢ (𝜑 → (𝑀...(0 + (𝑀 − 1))) = (𝑀...(𝑀 − 1))) |
| 24 | 18 | zred 12628 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → 𝑀 ∈ ℝ) |
| 25 | 24 | ltm1d 12083 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → (𝑀 − 1) < 𝑀) |
| 26 | | peano2zm 12565 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑀 ∈ ℤ → (𝑀 − 1) ∈
ℤ) |
| 27 | 18, 26 | syl 17 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → (𝑀 − 1) ∈ ℤ) |
| 28 | | fzn 13489 |
. . . . . . . . . . . . . . . . 17
⊢ ((𝑀 ∈ ℤ ∧ (𝑀 − 1) ∈ ℤ)
→ ((𝑀 − 1) <
𝑀 ↔ (𝑀...(𝑀 − 1)) = ∅)) |
| 29 | 18, 27, 28 | syl2anc 591 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → ((𝑀 − 1) < 𝑀 ↔ (𝑀...(𝑀 − 1)) = ∅)) |
| 30 | 25, 29 | mpbid 234 |
. . . . . . . . . . . . . . 15
⊢ (𝜑 → (𝑀...(𝑀 − 1)) = ∅) |
| 31 | 23, 30 | eqtrd 2776 |
. . . . . . . . . . . . . 14
⊢ (𝜑 → (𝑀...(0 + (𝑀 − 1))) = ∅) |
| 32 | 31 | adantr 482 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝐻 = ∅) → (𝑀...(0 + (𝑀 − 1))) = ∅) |
| 33 | | eqcom 2748 |
. . . . . . . . . . . . . 14
⊢ (𝐻 = ∅ ↔ ∅ =
𝐻) |
| 34 | 33 | bilani 506 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝐻 = ∅) → ∅ = 𝐻) |
| 35 | 17, 32, 34 | 3eqtrd 2780 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝐻 = ∅) → (𝑀...𝑁) = 𝐻) |
| 36 | 35 | fveq2d 6835 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝐻 = ∅) → (♯‘(𝑀...𝑁)) = (♯‘𝐻)) |
| 37 | 20, 19 | pncan3d 11503 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → (1 + (𝑀 − 1)) = 𝑀) |
| 38 | 37 | eqcomd 2747 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → 𝑀 = (1 + (𝑀 − 1))) |
| 39 | 38 | adantr 482 |
. . . . . . . . . . . . . . 15
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → 𝑀 = (1 + (𝑀 − 1))) |
| 40 | | 1red 11140 |
. . . . . . . . . . . . . . . . 17
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → 1 ∈
ℝ) |
| 41 | | neqne 2944 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (¬
𝐻 = ∅ → 𝐻 ≠ ∅) |
| 42 | 41 | adantl 483 |
. . . . . . . . . . . . . . . . . . 19
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → 𝐻 ≠ ∅) |
| 43 | | fzisoeu.h |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝜑 → 𝐻 ∈ Fin) |
| 44 | 43 | adantr 482 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → 𝐻 ∈ Fin) |
| 45 | | hashnncl 14323 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝐻 ∈ Fin →
((♯‘𝐻) ∈
ℕ ↔ 𝐻 ≠
∅)) |
| 46 | 44, 45 | syl 17 |
. . . . . . . . . . . . . . . . . . 19
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → ((♯‘𝐻) ∈ ℕ ↔ 𝐻 ≠ ∅)) |
| 47 | 42, 46 | mpbird 259 |
. . . . . . . . . . . . . . . . . 18
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → (♯‘𝐻) ∈
ℕ) |
| 48 | 47 | nnred 12184 |
. . . . . . . . . . . . . . . . 17
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → (♯‘𝐻) ∈
ℝ) |
| 49 | 27 | zred 12628 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝜑 → (𝑀 − 1) ∈ ℝ) |
| 50 | 49 | adantr 482 |
. . . . . . . . . . . . . . . . 17
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → (𝑀 − 1) ∈ ℝ) |
| 51 | 47 | nnge1d 12220 |
. . . . . . . . . . . . . . . . 17
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → 1 ≤
(♯‘𝐻)) |
| 52 | 40, 48, 50, 51 | leadd1dd 11759 |
. . . . . . . . . . . . . . . 16
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → (1 + (𝑀 − 1)) ≤ ((♯‘𝐻) + (𝑀 − 1))) |
| 53 | 52, 10 | breqtrrdi 5117 |
. . . . . . . . . . . . . . 15
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → (1 + (𝑀 − 1)) ≤ 𝑁) |
| 54 | 39, 53 | eqbrtrd 5097 |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → 𝑀 ≤ 𝑁) |
| 55 | 18 | adantr 482 |
. . . . . . . . . . . . . . 15
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → 𝑀 ∈ ℤ) |
| 56 | | hashcl 14313 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝐻 ∈ Fin →
(♯‘𝐻) ∈
ℕ0) |
| 57 | | nn0z 12543 |
. . . . . . . . . . . . . . . . . . 19
⊢
((♯‘𝐻)
∈ ℕ0 → (♯‘𝐻) ∈ ℤ) |
| 58 | 43, 56, 57 | 3syl 18 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝜑 → (♯‘𝐻) ∈
ℤ) |
| 59 | 58, 27 | zaddcld 12632 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → ((♯‘𝐻) + (𝑀 − 1)) ∈
ℤ) |
| 60 | 10, 59 | eqeltrid 2845 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → 𝑁 ∈ ℤ) |
| 61 | 60 | adantr 482 |
. . . . . . . . . . . . . . 15
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → 𝑁 ∈ ℤ) |
| 62 | | eluz 12797 |
. . . . . . . . . . . . . . 15
⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑁 ∈
(ℤ≥‘𝑀) ↔ 𝑀 ≤ 𝑁)) |
| 63 | 55, 61, 62 | syl2anc 591 |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → (𝑁 ∈ (ℤ≥‘𝑀) ↔ 𝑀 ≤ 𝑁)) |
| 64 | 54, 63 | mpbird 259 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → 𝑁 ∈ (ℤ≥‘𝑀)) |
| 65 | | hashfz 14384 |
. . . . . . . . . . . . 13
⊢ (𝑁 ∈
(ℤ≥‘𝑀) → (♯‘(𝑀...𝑁)) = ((𝑁 − 𝑀) + 1)) |
| 66 | 64, 65 | syl 17 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → (♯‘(𝑀...𝑁)) = ((𝑁 − 𝑀) + 1)) |
| 67 | 10 | oveq1i 7370 |
. . . . . . . . . . . . . . . 16
⊢ (𝑁 − 𝑀) = (((♯‘𝐻) + (𝑀 − 1)) − 𝑀) |
| 68 | 43, 56 | syl 17 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝜑 → (♯‘𝐻) ∈
ℕ0) |
| 69 | 68 | nn0cnd 12495 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → (♯‘𝐻) ∈
ℂ) |
| 70 | 69, 21, 19 | addsubassd 11520 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → (((♯‘𝐻) + (𝑀 − 1)) − 𝑀) = ((♯‘𝐻) + ((𝑀 − 1) − 𝑀))) |
| 71 | 67, 70 | eqtrid 2788 |
. . . . . . . . . . . . . . 15
⊢ (𝜑 → (𝑁 − 𝑀) = ((♯‘𝐻) + ((𝑀 − 1) − 𝑀))) |
| 72 | 20 | negcld 11487 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → -1 ∈
ℂ) |
| 73 | 19, 20 | negsubd 11506 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝜑 → (𝑀 + -1) = (𝑀 − 1)) |
| 74 | 73 | eqcomd 2747 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → (𝑀 − 1) = (𝑀 + -1)) |
| 75 | 19, 72, 74 | mvrladdd 11558 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → ((𝑀 − 1) − 𝑀) = -1) |
| 76 | 75 | oveq2d 7376 |
. . . . . . . . . . . . . . 15
⊢ (𝜑 → ((♯‘𝐻) + ((𝑀 − 1) − 𝑀)) = ((♯‘𝐻) + -1)) |
| 77 | 71, 76 | eqtrd 2776 |
. . . . . . . . . . . . . 14
⊢ (𝜑 → (𝑁 − 𝑀) = ((♯‘𝐻) + -1)) |
| 78 | 77 | oveq1d 7375 |
. . . . . . . . . . . . 13
⊢ (𝜑 → ((𝑁 − 𝑀) + 1) = (((♯‘𝐻) + -1) + 1)) |
| 79 | 78 | adantr 482 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → ((𝑁 − 𝑀) + 1) = (((♯‘𝐻) + -1) + 1)) |
| 80 | 69, 20 | negsubd 11506 |
. . . . . . . . . . . . . . 15
⊢ (𝜑 → ((♯‘𝐻) + -1) = ((♯‘𝐻) − 1)) |
| 81 | 80 | oveq1d 7375 |
. . . . . . . . . . . . . 14
⊢ (𝜑 → (((♯‘𝐻) + -1) + 1) =
(((♯‘𝐻) −
1) + 1)) |
| 82 | 69, 20 | npcand 11504 |
. . . . . . . . . . . . . 14
⊢ (𝜑 → (((♯‘𝐻) − 1) + 1) =
(♯‘𝐻)) |
| 83 | 81, 82 | eqtrd 2776 |
. . . . . . . . . . . . 13
⊢ (𝜑 → (((♯‘𝐻) + -1) + 1) =
(♯‘𝐻)) |
| 84 | 83 | adantr 482 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → (((♯‘𝐻) + -1) + 1) =
(♯‘𝐻)) |
| 85 | 66, 79, 84 | 3eqtrd 2780 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ ¬ 𝐻 = ∅) → (♯‘(𝑀...𝑁)) = (♯‘𝐻)) |
| 86 | 36, 85 | pm2.61dan 819 |
. . . . . . . . . 10
⊢ (𝜑 → (♯‘(𝑀...𝑁)) = (♯‘𝐻)) |
| 87 | 86 | oveq2d 7376 |
. . . . . . . . 9
⊢ (𝜑 → (1...(♯‘(𝑀...𝑁))) = (1...(♯‘𝐻))) |
| 88 | | isoeq4 7268 |
. . . . . . . . 9
⊢
((1...(♯‘(𝑀...𝑁))) = (1...(♯‘𝐻)) → (ℎ Isom < , < ((1...(♯‘(𝑀...𝑁))), (𝑀...𝑁)) ↔ ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)))) |
| 89 | 87, 88 | syl 17 |
. . . . . . . 8
⊢ (𝜑 → (ℎ Isom < , < ((1...(♯‘(𝑀...𝑁))), (𝑀...𝑁)) ↔ ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)))) |
| 90 | 89 | biimpd 231 |
. . . . . . 7
⊢ (𝜑 → (ℎ Isom < , < ((1...(♯‘(𝑀...𝑁))), (𝑀...𝑁)) → ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)))) |
| 91 | 90 | eximdv 1925 |
. . . . . 6
⊢ (𝜑 → (∃ℎ ℎ Isom < , < ((1...(♯‘(𝑀...𝑁))), (𝑀...𝑁)) → ∃ℎ ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)))) |
| 92 | 9, 91 | mpi 20 |
. . . . 5
⊢ (𝜑 → ∃ℎ ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁))) |
| 93 | | fzisoeu.or |
. . . . . 6
⊢ (𝜑 → < Or 𝐻) |
| 94 | | fz1iso 14419 |
. . . . . 6
⊢ (( <
Or 𝐻 ∧ 𝐻 ∈ Fin) → ∃𝑔 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻)) |
| 95 | 93, 43, 94 | syl2anc 591 |
. . . . 5
⊢ (𝜑 → ∃𝑔 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻)) |
| 96 | | exdistrv 1963 |
. . . . 5
⊢
(∃ℎ∃𝑔(ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)) ∧ 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻)) ↔ (∃ℎ ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)) ∧ ∃𝑔 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻))) |
| 97 | 92, 95, 96 | sylanbrc 590 |
. . . 4
⊢ (𝜑 → ∃ℎ∃𝑔(ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)) ∧ 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻))) |
| 98 | | isocnv 7278 |
. . . . . . . 8
⊢ (ℎ Isom < , <
((1...(♯‘𝐻)),
(𝑀...𝑁)) → ◡ℎ Isom < , < ((𝑀...𝑁), (1...(♯‘𝐻)))) |
| 99 | 98 | ad2antrl 735 |
. . . . . . 7
⊢ ((𝜑 ∧ (ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)) ∧ 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻))) → ◡ℎ Isom < , < ((𝑀...𝑁), (1...(♯‘𝐻)))) |
| 100 | | simprr 779 |
. . . . . . 7
⊢ ((𝜑 ∧ (ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)) ∧ 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻))) → 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻)) |
| 101 | | isotr 7284 |
. . . . . . 7
⊢ ((◡ℎ Isom < , < ((𝑀...𝑁), (1...(♯‘𝐻))) ∧ 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻)) → (𝑔 ∘ ◡ℎ) Isom < , < ((𝑀...𝑁), 𝐻)) |
| 102 | 99, 100, 101 | syl2anc 591 |
. . . . . 6
⊢ ((𝜑 ∧ (ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)) ∧ 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻))) → (𝑔 ∘ ◡ℎ) Isom < , < ((𝑀...𝑁), 𝐻)) |
| 103 | 102 | ex 414 |
. . . . 5
⊢ (𝜑 → ((ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)) ∧ 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻)) → (𝑔 ∘ ◡ℎ) Isom < , < ((𝑀...𝑁), 𝐻))) |
| 104 | 103 | 2eximdv 1927 |
. . . 4
⊢ (𝜑 → (∃ℎ∃𝑔(ℎ Isom < , < ((1...(♯‘𝐻)), (𝑀...𝑁)) ∧ 𝑔 Isom < , < ((1...(♯‘𝐻)), 𝐻)) → ∃ℎ∃𝑔(𝑔 ∘ ◡ℎ) Isom < , < ((𝑀...𝑁), 𝐻))) |
| 105 | 97, 104 | mpd 15 |
. . 3
⊢ (𝜑 → ∃ℎ∃𝑔(𝑔 ∘ ◡ℎ) Isom < , < ((𝑀...𝑁), 𝐻)) |
| 106 | | vex 3437 |
. . . . . . 7
⊢ 𝑔 ∈ V |
| 107 | | vex 3437 |
. . . . . . . 8
⊢ ℎ ∈ V |
| 108 | 107 | cnvex 7869 |
. . . . . . 7
⊢ ◡ℎ ∈ V |
| 109 | 106, 108 | coex 7874 |
. . . . . 6
⊢ (𝑔 ∘ ◡ℎ) ∈ V |
| 110 | | isoeq1 7265 |
. . . . . 6
⊢ (𝑓 = (𝑔 ∘ ◡ℎ) → (𝑓 Isom < , < ((𝑀...𝑁), 𝐻) ↔ (𝑔 ∘ ◡ℎ) Isom < , < ((𝑀...𝑁), 𝐻))) |
| 111 | 109, 110 | spcev 3546 |
. . . . 5
⊢ ((𝑔 ∘ ◡ℎ) Isom < , < ((𝑀...𝑁), 𝐻) → ∃𝑓 𝑓 Isom < , < ((𝑀...𝑁), 𝐻)) |
| 112 | 111 | a1i 11 |
. . . 4
⊢ (𝜑 → ((𝑔 ∘ ◡ℎ) Isom < , < ((𝑀...𝑁), 𝐻) → ∃𝑓 𝑓 Isom < , < ((𝑀...𝑁), 𝐻))) |
| 113 | 112 | exlimdvv 1942 |
. . 3
⊢ (𝜑 → (∃ℎ∃𝑔(𝑔 ∘ ◡ℎ) Isom < , < ((𝑀...𝑁), 𝐻) → ∃𝑓 𝑓 Isom < , < ((𝑀...𝑁), 𝐻))) |
| 114 | 105, 113 | mpd 15 |
. 2
⊢ (𝜑 → ∃𝑓 𝑓 Isom < , < ((𝑀...𝑁), 𝐻)) |
| 115 | | ltwefz 13920 |
. . 3
⊢ < We
(𝑀...𝑁) |
| 116 | | wemoiso 7919 |
. . 3
⊢ ( < We
(𝑀...𝑁) → ∃*𝑓 𝑓 Isom < , < ((𝑀...𝑁), 𝐻)) |
| 117 | 115, 116 | mp1i 13 |
. 2
⊢ (𝜑 → ∃*𝑓 𝑓 Isom < , < ((𝑀...𝑁), 𝐻)) |
| 118 | | df-eu 2575 |
. 2
⊢
(∃!𝑓 𝑓 Isom < , < ((𝑀...𝑁), 𝐻) ↔ (∃𝑓 𝑓 Isom < , < ((𝑀...𝑁), 𝐻) ∧ ∃*𝑓 𝑓 Isom < , < ((𝑀...𝑁), 𝐻))) |
| 119 | 114, 117,
118 | sylanbrc 590 |
1
⊢ (𝜑 → ∃!𝑓 𝑓 Isom < , < ((𝑀...𝑁), 𝐻)) |