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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 4158 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 ∪ 𝐶) = (𝐵 ∪ 𝐷)) | |
4 | 1, 2, 3 | mp2an 691 | 1 ⊢ (𝐴 ∪ 𝐶) = (𝐵 ∪ 𝐷) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1542 ∪ cun 3946 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-ext 2704 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-tru 1545 df-ex 1783 df-sb 2069 df-clab 2711 df-cleq 2725 df-clel 2811 df-v 3477 df-un 3953 |
This theorem is referenced by: indir 4275 difundir 4280 difindi 4281 dfsymdif3 4296 unrab 4305 rabun2 4313 elnelun 4389 dfif6 4531 dfif3 4542 dfif5 4544 symdif0 5088 symdifid 5090 unopab 5230 xpundi 5743 xpundir 5744 xpun 5748 dmun 5909 resundi 5994 resundir 5995 cnvun 6140 rnun 6143 imaundi 6147 imaundir 6148 dmtpop 6215 coundi 6244 coundir 6245 unidmrn 6276 dfdm2 6278 predun 6327 mptun 6694 partfun 6695 resasplit 6759 fresaun 6760 fresaunres2 6761 residpr 7138 fpr 7149 sbthlem5 9084 1sdomOLD 9246 djuassen 10170 fz0to3un2pr 13600 fz0to4untppr 13601 fzo0to42pr 13716 hashgval 14290 hashinf 14292 relexpcnv 14979 bpoly3 15999 vdwlem6 16916 setsres 17108 lefld 18542 opsrtoslem1 21608 volun 25054 nosupcbv 27195 noinfcbv 27210 lrold 27381 addsval2 27437 addscut 27452 addsunif 27475 mulsval2 27557 muls01 27558 mulsproplem2 27563 mulsproplem3 27564 mulsproplem4 27565 mulscut 27578 mulsunif 27595 addsdilem1 27596 addsdilem2 27597 mulsasslem1 27608 mulsasslem2 27609 precsexlemcbv 27642 ex-dif 29666 ex-in 29668 ex-pw 29672 ex-xp 29679 ex-cnv 29680 ex-rn 29683 fzodif1 31992 ordtprsuni 32888 indval2 33001 sigaclfu2 33108 eulerpartgbij 33360 subfacp1lem1 34159 subfacp1lem5 34164 fmla1 34367 fixun 34870 refssfne 35232 onint1 35323 bj-pr1un 35873 bj-pr21val 35883 bj-pr2un 35887 bj-pr22val 35889 poimirlem16 36493 poimirlem19 36496 itg2addnclem2 36529 iblabsnclem 36540 df3o3 42050 rclexi 42352 rtrclex 42354 cnvrcl0 42362 dfrtrcl5 42366 dfrcl2 42411 dfrcl4 42413 iunrelexp0 42439 relexpiidm 42441 corclrcl 42444 relexp01min 42450 corcltrcl 42476 cotrclrcl 42479 frege131d 42501 rnfdmpr 45976 31prm 46252 |
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