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| Mirrors > Home > MPE Home > Th. List > uneq12i | Structured version Visualization version GIF version | ||
| Description: Equality inference for the union of two classes. (Contributed by NM, 12-Aug-2004.) (Proof shortened by Eric Schmidt, 26-Jan-2007.) |
| Ref | Expression |
|---|---|
| uneq1i.1 | ⊢ 𝐴 = 𝐵 |
| uneq12i.2 | ⊢ 𝐶 = 𝐷 |
| Ref | Expression |
|---|---|
| uneq12i | ⊢ (𝐴 ∪ 𝐶) = (𝐵 ∪ 𝐷) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uneq1i.1 | . 2 ⊢ 𝐴 = 𝐵 | |
| 2 | uneq12i.2 | . 2 ⊢ 𝐶 = 𝐷 | |
| 3 | uneq12 4116 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 ∪ 𝐶) = (𝐵 ∪ 𝐷)) | |
| 4 | 1, 2, 3 | mp2an 702 | 1 ⊢ (𝐴 ∪ 𝐶) = (𝐵 ∪ 𝐷) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1560 ∪ cun 3902 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-ext 2734 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-tru 1563 df-ex 1800 df-sb 2091 df-clab 2741 df-cleq 2754 df-clel 2837 df-v 3456 df-un 3909 |
| This theorem is referenced by: indir 4238 difundir 4243 difindi 4244 dfsymdif3 4258 unrab 4267 rabun2 4276 elnelun 4347 dfif6 4483 dfif3 4495 dfif5 4497 symdif0 5042 symdifid 5044 unopab 5180 xpundi 5716 xpundir 5717 xpun 5721 dmun 5886 resundi 5979 resundir 5980 cnvun 6126 rnun 6129 imaundi 6134 imaundir 6135 dmtpop 6205 coundi 6234 coundir 6235 unidmrn 6266 dfdm2 6268 predun 6315 mptun 6667 partfun 6668 resasplit 6734 fresaun 6735 fresaunres2 6736 residpr 7125 fpr 7137 sbthlem5 9063 djuassen 10135 indval2 12200 indconst0 12207 fz0to3un2pr 13634 fz0to4untppr 13635 fz0to5un2tp 13636 fzo0to42pr 13759 hashgval 14346 hashinf 14348 relexpcnv 15048 bpoly3 16088 vdwlem6 17022 setsres 17214 lefld 18624 opsrtoslem1 22108 volun 25607 nosupcbv 27766 noinfcbv 27781 lrold 27990 addsval2 28056 addcuts 28071 addsunif 28095 addbday 28111 mulsval2 28204 muls01 28205 mulsproplem2 28210 mulsproplem3 28211 mulsproplem4 28212 mulcut 28225 mulsunif 28243 addsdilem1 28244 addsdilem2 28245 mulsasslem1 28256 mulsasslem2 28257 mulsunif2 28263 precsexlemcbv 28299 onaddscl 28370 onmulscl 28371 n0cut 28427 twocut 28516 bdaypw2n0bndlem 28556 0reno 28589 1reno 28590 ex-dif 30625 ex-in 30627 ex-pw 30631 ex-xp 30638 ex-cnv 30639 ex-rn 30642 fzodif1 32994 ordtprsuni 34216 sigaclfu2 34418 eulerpartgbij 34669 subfacp1lem1 35529 subfacp1lem5 35534 fmla1 35737 fixun 36257 refssfne 36718 onint1 36809 ttcun 36872 bj-pr1un 37488 bj-pr21val 37498 bj-pr2un 37502 bj-pr22val 37504 poimirlem16 38135 poimirlem19 38138 itg2addnclem2 38171 iblabsnclem 38182 dfsucmap3 38962 redvmptabs 42969 df3o3 43891 rclexi 44191 rtrclex 44193 cnvrcl0 44201 dfrtrcl5 44205 dfrcl2 44250 dfrcl4 44252 iunrelexp0 44278 relexpiidm 44280 corclrcl 44283 relexp01min 44289 corcltrcl 44315 cotrclrcl 44318 frege131d 44340 rnfdmpr 47875 31prm 48206 |
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