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Mirrors > Home > NFE Home > Th. List > isores1 | GIF version |
Description: An isomorphism from one well-order to another can be restricted on either well-order. (Contributed by Mario Carneiro, 15-Jan-2013.) |
Ref | Expression |
---|---|
isores1 | ⊢ (H Isom R, S (A, B) ↔ H Isom (R ∩ (A × A)), S(A, B)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | isocnv 5491 | . . . . 5 ⊢ (H Isom R, S (A, B) → ◡H Isom S, R (B, A)) | |
2 | isores2 5493 | . . . . 5 ⊢ (◡H Isom S, R (B, A) ↔ ◡H Isom S, (R ∩ (A × A))(B, A)) | |
3 | 1, 2 | sylib 188 | . . . 4 ⊢ (H Isom R, S (A, B) → ◡H Isom S, (R ∩ (A × A))(B, A)) |
4 | isocnv 5491 | . . . 4 ⊢ (◡H Isom S, (R ∩ (A × A))(B, A) → ◡◡H Isom (R ∩ (A × A)), S(A, B)) | |
5 | 3, 4 | syl 15 | . . 3 ⊢ (H Isom R, S (A, B) → ◡◡H Isom (R ∩ (A × A)), S(A, B)) |
6 | cnvcnv 5062 | . . . 4 ⊢ ◡◡H = H | |
7 | isoeq1 5482 | . . . 4 ⊢ (◡◡H = H → (◡◡H Isom (R ∩ (A × A)), S(A, B) ↔ H Isom (R ∩ (A × A)), S(A, B))) | |
8 | 6, 7 | ax-mp 8 | . . 3 ⊢ (◡◡H Isom (R ∩ (A × A)), S(A, B) ↔ H Isom (R ∩ (A × A)), S(A, B)) |
9 | 5, 8 | sylib 188 | . 2 ⊢ (H Isom R, S (A, B) → H Isom (R ∩ (A × A)), S(A, B)) |
10 | isocnv 5491 | . . . . 5 ⊢ (H Isom (R ∩ (A × A)), S(A, B) → ◡H Isom S, (R ∩ (A × A))(B, A)) | |
11 | 10, 2 | sylibr 203 | . . . 4 ⊢ (H Isom (R ∩ (A × A)), S(A, B) → ◡H Isom S, R (B, A)) |
12 | isocnv 5491 | . . . 4 ⊢ (◡H Isom S, R (B, A) → ◡◡H Isom R, S (A, B)) | |
13 | 11, 12 | syl 15 | . . 3 ⊢ (H Isom (R ∩ (A × A)), S(A, B) → ◡◡H Isom R, S (A, B)) |
14 | isoeq1 5482 | . . . 4 ⊢ (◡◡H = H → (◡◡H Isom R, S (A, B) ↔ H Isom R, S (A, B))) | |
15 | 6, 14 | ax-mp 8 | . . 3 ⊢ (◡◡H Isom R, S (A, B) ↔ H Isom R, S (A, B)) |
16 | 13, 15 | sylib 188 | . 2 ⊢ (H Isom (R ∩ (A × A)), S(A, B) → H Isom R, S (A, B)) |
17 | 9, 16 | impbii 180 | 1 ⊢ (H Isom R, S (A, B) ↔ H Isom (R ∩ (A × A)), S(A, B)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 176 = wceq 1642 ∩ cin 3208 × cxp 4770 ◡ccnv 4771 Isom wiso 4782 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-3 7 ax-mp 8 ax-gen 1546 ax-5 1557 ax-17 1616 ax-9 1654 ax-8 1675 ax-13 1712 ax-14 1714 ax-6 1729 ax-7 1734 ax-11 1746 ax-12 1925 ax-ext 2334 ax-nin 4078 ax-xp 4079 ax-cnv 4080 ax-1c 4081 ax-sset 4082 ax-si 4083 ax-ins2 4084 ax-ins3 4085 ax-typlower 4086 ax-sn 4087 |
This theorem depends on definitions: df-bi 177 df-or 359 df-an 360 df-3or 935 df-3an 936 df-nan 1288 df-tru 1319 df-ex 1542 df-nf 1545 df-sb 1649 df-eu 2208 df-mo 2209 df-clab 2340 df-cleq 2346 df-clel 2349 df-nfc 2478 df-ne 2518 df-ral 2619 df-rex 2620 df-reu 2621 df-rmo 2622 df-rab 2623 df-v 2861 df-sbc 3047 df-nin 3211 df-compl 3212 df-in 3213 df-un 3214 df-dif 3215 df-symdif 3216 df-ss 3259 df-pss 3261 df-nul 3551 df-if 3663 df-pw 3724 df-sn 3741 df-pr 3742 df-uni 3892 df-int 3927 df-opk 4058 df-1c 4136 df-pw1 4137 df-uni1 4138 df-xpk 4185 df-cnvk 4186 df-ins2k 4187 df-ins3k 4188 df-imak 4189 df-cok 4190 df-p6 4191 df-sik 4192 df-ssetk 4193 df-imagek 4194 df-idk 4195 df-iota 4339 df-0c 4377 df-addc 4378 df-nnc 4379 df-fin 4380 df-lefin 4440 df-ltfin 4441 df-ncfin 4442 df-tfin 4443 df-evenfin 4444 df-oddfin 4445 df-sfin 4446 df-spfin 4447 df-phi 4565 df-op 4566 df-proj1 4567 df-proj2 4568 df-opab 4623 df-br 4640 df-co 4726 df-ima 4727 df-id 4767 df-xp 4784 df-cnv 4785 df-rn 4786 df-dm 4787 df-res 4788 df-fun 4789 df-fn 4790 df-f 4791 df-f1 4792 df-fo 4793 df-f1o 4794 df-fv 4795 df-iso 4796 |
This theorem is referenced by: (None) |
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