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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 2019 | . 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 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 |
| This theorem is referenced by: equtr 2023 equeuclr 2025 spfw 2035 cbvalw 2037 alcomimw 2045 ax8 2120 elequ1 2121 ax9 2128 elequ2 2129 stdpc7 2258 sbequ12r 2260 cbvalv1 2346 cbval 2403 sb9 2524 ax9ALT 2732 sbralieALT 3325 rabrabi 3420 reurab 3661 reu8 3693 sbcco2 3769 reu8nf 3829 notabw 4267 sbcop1 5444 opeliunxp 5699 opeliun2xp 5700 elrnmpt1 5917 elidinxp 6011 fvn0ssdmfun 7028 elabrex 7198 elabrexg 7199 riotarab 7367 tfisi 7811 tfinds2 7816 opabex3d 7919 opabex3rd 7920 opabex3 7921 xpord2indlem 8099 xpord3inddlem 8106 mpocurryd 8221 boxriin 8890 ixpiunwdom 9507 elirrv 9514 elirrvOLD 9515 rabssnn0fi 13921 fproddivf 15922 prmodvdslcmf 16987 eqg0subg 19137 1mavmul 22504 ptbasfi 23537 elmptrab 23783 pcoass 24992 iundisj2 25518 dchrisumlema 27467 dchrisumlem2 27469 cusgrfilem2 29542 frgrncvvdeq 30396 frgr2wwlk1 30416 iundisj2f 32676 iundisj2fi 32887 bnj1014 35136 cvmsss2 35487 gonarlem 35607 ax8dfeq 36009 in-ax8 36437 ss-ax8 36438 bj-ssbid1ALT 36904 bj-cbvexw 36915 bj-sb 36926 bj-axseprep 37316 finxpreclem6 37645 ralssiun 37656 wl-nfs1t 37786 wl-equsb4 37806 wl-euequf 37823 matunitlindflem1 37861 poimirlem26 37891 mblfinlem2 37903 sdclem2 37987 axc11-o 39321 evl1gprodd 42481 idomnnzgmulnz 42497 abbibw 43029 rexzrexnn0 43155 disjinfi 45545 dvnmptdivc 46290 iblsplitf 46322 vonn0ioo2 47042 vonn0icc2 47044 funressnvmo 47399 ichcircshi 47808 ichreuopeq 47827 paireqne 47865 reuopreuprim 47880 uspgrsprf1 48501 |
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