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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 36758 | . 2 ⊢ Bigcup :V–onto→V | |
| 2 | fofn 6803 | . 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 3450 Fn wfn 6538 –onto→wfo 6541 Bigcup cbigcup 36692 |
| 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-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 |
| 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-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-symdif 4197 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5546 df-eprel 5551 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-fo 6549 df-fv 6551 df-1st 8005 df-2nd 8006 df-txp 36712 df-bigcup 36716 |
| This theorem is used by: fvbigcup 36760 |
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