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Mirrors > Home > MPE Home > Th. List > equcoms | Structured version Visualization version GIF version |
Description: An inference commuting equality in antecedent. Used to eliminate the need for a syllogism. (Contributed by NM, 10-Jan-1993.) |
Ref | Expression |
---|---|
equcoms.1 | ⊢ (𝑥 = 𝑦 → 𝜑) |
Ref | Expression |
---|---|
equcoms | ⊢ (𝑦 = 𝑥 → 𝜑) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | equcomi 2024 | . 2 ⊢ (𝑦 = 𝑥 → 𝑥 = 𝑦) | |
2 | equcoms.1 | . 2 ⊢ (𝑥 = 𝑦 → 𝜑) | |
3 | 1, 2 | syl 17 | 1 ⊢ (𝑦 = 𝑥 → 𝜑) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1781 |
This theorem is referenced by: equtr 2028 equeuclr 2030 spfw 2040 cbvalw 2042 alcomiw 2050 alcomiwOLD 2051 sbequOLD 2092 ax8 2120 elequ1 2121 ax9 2128 elequ2 2129 stdpc7 2252 sbequ12r 2254 sbequvvOLD 2335 cbvalv1 2361 cbval 2416 cbvalvOLD 2420 sb9 2561 sbequALT 2597 ax9ALT 2817 sbralie 3471 reu8 3724 sbcco2 3799 reu8nf 3860 sbcop1 5379 opeliunxp 5619 elrnmpt1 5830 elidinxp 5911 fvn0ssdmfun 6842 elabrex 7002 tfisi 7573 tfinds2 7578 opabex3d 7666 opabex3rd 7667 opabex3 7668 mpocurryd 7935 boxriin 8504 ixpiunwdom 9055 elirrv 9060 rabssnn0fi 13355 fproddivf 15341 prmodvdslcmf 16383 1mavmul 21157 ptbasfi 22189 elmptrab 22435 pcoass 23628 iundisj2 24150 dchrisumlema 26064 dchrisumlem2 26066 cusgrfilem2 27238 frgrncvvdeq 28088 frgr2wwlk1 28108 iundisj2f 30340 iundisj2fi 30520 bnj1014 32233 cvmsss2 32521 gonarlem 32641 ax8dfeq 33043 bj-ssbid1ALT 33998 bj-cbvexw 34009 bj-sb 34021 finxpreclem6 34680 ralssiun 34691 wl-nfs1t 34792 wl-equsb4 34808 wl-euequf 34825 wl-ax11-lem8 34839 matunitlindflem1 34903 poimirlem26 34933 mblfinlem2 34945 sdclem2 35032 axc11-o 36102 rexzrexnn0 39421 elabrexg 41323 disjinfi 41474 dvnmptdivc 42243 iblsplitf 42275 vonn0ioo2 42992 vonn0icc2 42994 funressnvmo 43300 ichcircshi 43632 ichreuopeq 43655 paireqne 43693 reuopreuprim 43708 uspgrsprf1 44042 opeliun2xp 44401 |
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