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| Mirrors > Home > MPE Home > Th. List > xpeq12d | Structured version Visualization version GIF version | ||
| Description: Equality deduction for Cartesian product. (Contributed by NM, 8-Dec-2013.) |
| Ref | Expression |
|---|---|
| xpeq1d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| xpeq12d.2 | ⊢ (𝜑 → 𝐶 = 𝐷) |
| Ref | Expression |
|---|---|
| xpeq12d | ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpeq1d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | xpeq12d.2 | . 2 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 3 | xpeq12 5670 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 × 𝐶) = (𝐵 × 𝐷)) | |
| 4 | 1, 2, 3 | syl2anc 593 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1559 × cxp 5643 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-opab 5162 df-xp 5651 |
| This theorem is referenced by: sqxpeqd 5677 opeliunxp 5712 opeliun2xp 5713 mpomptsx 8041 dmmpossx 8043 fmpox 8044 ovmptss 8067 fparlem3 8088 fparlem4 8089 on2recsov 8633 naddcllem 8641 erssxp 8697 marypha2lem2 9379 ackbij1lem8 10179 r1om 10196 fictb 10197 axcc2lem 10390 axcc2 10391 axdc4lem 10409 fsum2dlem 15780 fsumcom2 15784 ackbijnn 15841 fprod2dlem 15993 fprodcom2 15997 homaval 18047 xpcval 18192 xpchom 18195 xpchom2 18201 1stfval 18206 2ndfval 18209 xpcpropd 18223 evlfval 18232 efmnd 18887 isga 19314 gsumcom2 19998 gsumxp 19999 ablfaclem3 20112 psrval 21947 mamufval 22432 mamudm 22435 mvmulfval 22582 mavmuldm 22590 mavmul0g 22593 txbas 23607 ptbasfi 23621 txindis 23674 tmsxps 24576 metustexhalf 24596 noxpordpred 28023 aciunf1lem 32814 gsumpart 33204 gsumwrd2dccatlem 33218 gsumwrd2dccat 33219 erlval 33400 rlocval 33401 fedgmullem1 33887 fldextrspunlsplem 33931 esum2dlem 34350 lpadval 34937 cvmliftlem15 35612 mexval 35816 mpstval 35849 mclsval 35877 mclsax 35883 mclsppslem 35897 filnetlem4 36705 poimirlem26 38109 poimirlem28 38111 heiborlem3 38276 cnvref4 38813 elrefrels2 39061 refreleq 39064 elcnvrefrels2 39077 dvhfset 41668 dvhset 41669 dibffval 41728 dibfval 41729 hdmap1fval 42384 dmmpossx2 48923 dmrnxp 49422 imasubclem3 49691 imaf1hom 49693 swapf2f1oaALT 49863 fucofvalg 49903 fucofvalne 49910 fucof21 49932 functhinclem1 50029 functhinclem3 50031 functhinclem4 50032 |
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