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| Mirrors > Home > MPE Home > Th. List > f1oen | Structured version Visualization version GIF version | ||
| Description: The domain and range of a one-to-one, onto function are equinumerous. (Contributed by NM, 19-Jun-1998.) |
| Ref | Expression |
|---|---|
| f1oen.1 | ⊢ 𝐴 ∈ V |
| Ref | Expression |
|---|---|
| f1oen | ⊢ (𝐹:𝐴–1-1-onto→𝐵 → 𝐴 ≈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1oen.1 | . 2 ⊢ 𝐴 ∈ V | |
| 2 | f1oeng 8997 | . 2 ⊢ ((𝐴 ∈ V ∧ 𝐹:𝐴–1-1-onto→𝐵) → 𝐴 ≈ 𝐵) | |
| 3 | 1, 2 | mpan 703 | 1 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → 𝐴 ≈ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2144 Vcvv 3450 class class class wbr 5102 –1-1-onto→wf1o 6537 ≈ cen 8970 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-en 8974 |
| This theorem is used by: mapfien2 9401 infxpenlem 10092 dfac8alem 10108 dfac12lem2 10223 dfac12lem3 10224 hfom 10321 axcc2lem 10514 summolem3 15880 summolem2 15882 zsum 15884 prodmolem3 16100 prodmolem2 16102 zprod 16104 cpnnen 16397 eulerthlem2 16959 hashgcdeq 16967 4sqlem11 17133 gicen 19492 odhash 19788 odhash2 19789 sylow1lem2 19813 sylow2blem1 19834 znhash 21864 wlkswwlksen 30469 wlknwwlksnen 30478 eupthfi 30806 numclwwlk1lem2 30961 ballotlemfrc 35159 ballotlem8 35169 erdszelem10 35965 poimirlem4 38543 poimirlem26 38565 poimirlem27 38566 pwfi2en 44099 gricen 49023 grlicen 49115 thincciso2 50563 termcterm2 50622 aacllem 50939 |
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