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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 2345 cbval 2402 sb9 2523 ax9ALT 2731 sbralieALT 3316 rabrabi 3408 reurab 3647 reu8 3679 sbcco2 3755 reu8nf 3815 notabw 4253 sbcop1 5441 opeliunxp 5698 opeliun2xp 5699 elrnmpt1 5915 elidinxp 6009 fvn0ssdmfun 7026 elabrex 7197 elabrexg 7198 riotarab 7366 tfisi 7810 tfinds2 7815 opabex3d 7918 opabex3rd 7919 opabex3 7920 xpord2indlem 8097 xpord3inddlem 8104 mpocurryd 8219 boxriin 8888 ixpiunwdom 9505 elirrv 9512 elirrvOLD 9513 rabssnn0fi 13948 fproddivf 15952 prmodvdslcmf 17018 eqg0subg 19171 1mavmul 22513 ptbasfi 23546 elmptrab 23792 pcoass 24991 iundisj2 25516 dchrisumlema 27451 dchrisumlem2 27453 cusgrfilem2 29525 frgrncvvdeq 30379 frgr2wwlk1 30399 iundisj2f 32660 iundisj2fi 32870 bnj1014 35103 cvmsss2 35456 gonarlem 35576 ax8dfeq 35978 in-ax8 36406 ss-ax8 36407 bj-ssbid1ALT 36959 bj-cbvexw 36971 bj-sb 36984 bj-axseprep 37381 finxpreclem6 37712 ralssiun 37723 wl-nfs1t 37862 wl-equsb4 37882 wl-euequf 37899 matunitlindflem1 37937 poimirlem26 37967 mblfinlem2 37979 sdclem2 38063 axc11-o 39397 evl1gprodd 42556 idomnnzgmulnz 42572 abbibw 43110 rexzrexnn0 43232 disjinfi 45622 dvnmptdivc 46366 iblsplitf 46398 vonn0ioo2 47118 vonn0icc2 47120 funressnvmo 47493 ichcircshi 47914 ichreuopeq 47933 paireqne 47971 reuopreuprim 47986 nprmmul3 47989 uspgrsprf1 48623 |
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