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Mirrors > Home > NFE Home > Th. List > isoeq5 | Unicode version |
Description: Equality theorem for isomorphisms. (Contributed by set.mm contributors, 17-May-2004.) |
Ref | Expression |
---|---|
isoeq5 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1oeq3 5283 | . . 3 | |
2 | 1 | anbi1d 685 | . 2 |
3 | df-iso 4796 | . 2 | |
4 | df-iso 4796 | . 2 | |
5 | 2, 3, 4 | 3bitr4g 279 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 176 wa 358 wceq 1642 wral 2614 class class class wbr 4639 wf1o 4780 cfv 4781 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-6 1729 ax-7 1734 ax-11 1746 ax-12 1925 ax-ext 2334 |
This theorem depends on definitions: df-bi 177 df-or 359 df-an 360 df-nan 1288 df-tru 1319 df-ex 1542 df-nf 1545 df-sb 1649 df-clab 2340 df-cleq 2346 df-clel 2349 df-nfc 2478 df-v 2861 df-nin 3211 df-compl 3212 df-in 3213 df-ss 3259 df-f 4791 df-f1 4792 df-fo 4793 df-f1o 4794 df-iso 4796 |
This theorem is referenced by: (None) |
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