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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 3317 rabrabi 3409 reurab 3648 reu8 3680 sbcco2 3756 reu8nf 3816 notabw 4254 sbcop1 5436 opeliunxp 5691 opeliun2xp 5692 elrnmpt1 5909 elidinxp 6003 fvn0ssdmfun 7020 elabrex 7190 elabrexg 7191 riotarab 7359 tfisi 7803 tfinds2 7808 opabex3d 7911 opabex3rd 7912 opabex3 7913 xpord2indlem 8090 xpord3inddlem 8097 mpocurryd 8212 boxriin 8881 ixpiunwdom 9498 elirrv 9505 elirrvOLD 9506 rabssnn0fi 13939 fproddivf 15943 prmodvdslcmf 17009 eqg0subg 19162 1mavmul 22523 ptbasfi 23556 elmptrab 23802 pcoass 25001 iundisj2 25526 dchrisumlema 27465 dchrisumlem2 27467 cusgrfilem2 29540 frgrncvvdeq 30394 frgr2wwlk1 30414 iundisj2f 32675 iundisj2fi 32885 bnj1014 35119 cvmsss2 35472 gonarlem 35592 ax8dfeq 35994 in-ax8 36422 ss-ax8 36423 bj-ssbid1ALT 36975 bj-cbvexw 36987 bj-sb 37000 bj-axseprep 37397 finxpreclem6 37726 ralssiun 37737 wl-nfs1t 37876 wl-equsb4 37896 wl-euequf 37913 matunitlindflem1 37951 poimirlem26 37981 mblfinlem2 37993 sdclem2 38077 axc11-o 39411 evl1gprodd 42570 idomnnzgmulnz 42586 abbibw 43124 rexzrexnn0 43250 disjinfi 45640 dvnmptdivc 46384 iblsplitf 46416 vonn0ioo2 47136 vonn0icc2 47138 funressnvmo 47505 ichcircshi 47926 ichreuopeq 47945 paireqne 47983 reuopreuprim 47998 nprmmul3 48001 uspgrsprf1 48635 |
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