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Mirrors > Home > ILE Home > Th. List > fex2 | Unicode version |
Description: A function with bounded domain and range is a set. This version is proven without the Axiom of Replacement. (Contributed by Mario Carneiro, 24-Jun-2015.) |
Ref | Expression |
---|---|
fex2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xpexg 4718 | . . 3 | |
2 | 1 | 3adant1 1005 | . 2 |
3 | fssxp 5355 | . . 3 | |
4 | 3 | 3ad2ant1 1008 | . 2 |
5 | 2, 4 | ssexd 4122 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 w3a 968 wcel 2136 cvv 2726 wss 3116 cxp 4602 wf 5184 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ral 2449 df-rex 2450 df-v 2728 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-br 3983 df-opab 4044 df-xp 4610 df-rel 4611 df-cnv 4612 df-dm 4614 df-rn 4615 df-fun 5190 df-fn 5191 df-f 5192 |
This theorem is referenced by: elmapg 6627 f1oen2g 6721 f1dom2g 6722 dom3d 6740 mapxpen 6814 climrecvg1n 11289 cnpfval 12835 txcn 12915 blfvalps 13025 |
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