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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fnbigcup | Structured version Visualization version GIF version | ||
| Description: Bigcup is a function over the universal class. (Contributed by Scott Fenton, 11-Apr-2012.) |
| Ref | Expression |
|---|---|
| fnbigcup | ⊢ Bigcup Fn V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fobigcup 36427 | . 2 ⊢ Bigcup :V–onto→V | |
| 2 | fofn 6798 | . 2 ⊢ ( Bigcup :V–onto→V → Bigcup Fn V) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ Bigcup Fn V |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: Vcvv 3457 Fn wfn 6535 –onto→wfo 6538 Bigcup cbigcup 36361 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-symdif 4206 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-eprel 5563 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-fo 6546 df-fv 6548 df-1st 7992 df-2nd 7993 df-txp 36381 df-bigcup 36385 |
| This theorem is used by: fvbigcup 36429 |
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