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Related theorems GIF version |
| Description: Well-ordering of isomorphic relations. |
| Ref | Expression |
|---|---|
| f1owe.1 | ⊢ R = {〈x, y〉∣(F ‘x)S(F ‘y)} |
| Ref | Expression |
|---|---|
| f1owe | ⊢ (F:A–1-1-onto→B → (S We B → R We A)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fveq2 2832 | . . . . . 6 ⊢ (x = z → (F ‘x) = (F ‘z)) | |
| 2 | 1 | breq1d 2071 | . . . . 5 ⊢ (x = z → ((F ‘x)S(F ‘y) ↔ (F ‘z)S(F ‘y))) |
| 3 | fveq2 2832 | . . . . . 6 ⊢ (y = w → (F ‘y) = (F ‘w)) | |
| 4 | 3 | breq2d 2072 | . . . . 5 ⊢ (y = w → ((F ‘z)S(F ‘y) ↔ (F ‘z)S(F ‘w))) |
| 5 | f1owe.1 | . . . . 5 ⊢ R = {〈x, y〉∣(F ‘x)S(F ‘y)} | |
| 6 | 2, 4, 5 | brabg 2116 | . . . 4 ⊢ ((z ∈ A ∧ w ∈ A) → (zRw ↔ (F ‘z)S(F ‘w))) |
| 7 | 6 | rgen2 1248 | . . 3 ⊢ ∀z ∈ A ∀w ∈ A (zRw ↔ (F ‘z)S(F ‘w)) |
| 8 | df-iso 2439 | . . . 4 ⊢ (F Isom R, S (A, B) ↔ (F:A–1-1-onto→B ∧ ∀z ∈ A ∀w ∈ A (zRw ↔ (F ‘z)S(F ‘w)))) | |
| 9 | isowe 2941 | . . . 4 ⊢ (F Isom R, S (A, B) → (R We A ↔ S We B)) | |
| 10 | 8, 9 | sylbir 176 | . . 3 ⊢ ((F:A–1-1-onto→B ∧ ∀z ∈ A ∀w ∈ A (zRw ↔ (F ‘z)S(F ‘w))) → (R We A ↔ S We B)) |
| 11 | 7, 10 | mpan2 519 | . 2 ⊢ (F:A–1-1-onto→B → (R We A ↔ S We B)) |
| 12 | 11 | biimprd 136 | 1 ⊢ (F:A–1-1-onto→B → (S We B → R We A)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 ∧ wa 196 = weq 797 = wceq 1091 ∀wral 1201 class class class wbr 2054 {copab 2055 We wwe 2062 –1-1-onto→wf1o 2421 ‘cfv 2422 Isom wiso 2423 |
| This theorem is referenced by: weth 3602 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-un 1076 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-3or 582 df-3an 583 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-ral 1205 df-rex 1206 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-tp 1814 df-op 1815 df-uni 1920 df-br 2063 df-opab 2098 df-id 2125 df-po 2128 df-so 2138 df-fr 2169 df-we 2186 df-xp 2424 df-rel 2425 df-cnv 2426 df-co 2427 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fun 2432 df-fn 2433 df-f 2434 df-f1 2435 df-fo 2436 df-f1o 2437 df-fv 2438 df-iso 2439 |