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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 5650 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 × 𝐶) = (𝐵 × 𝐷)) | |
| 4 | 1, 2, 3 | syl2anc 590 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1547 × cxp 5623 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-opab 5142 df-xp 5631 |
| This theorem is referenced by: sqxpeqd 5657 opeliunxp 5692 opeliun2xp 5693 mpomptsx 8013 dmmpossx 8015 fmpox 8016 ovmptss 8039 fparlem3 8060 fparlem4 8061 on2recsov 8601 naddcllem 8609 erssxp 8664 marypha2lem2 9346 ackbij1lem8 10146 r1om 10163 fictb 10164 axcc2lem 10356 axcc2 10357 axdc4lem 10375 fsum2dlem 15730 fsumcom2 15734 ackbijnn 15791 fprod2dlem 15943 fprodcom2 15947 homaval 17996 xpcval 18141 xpchom 18144 xpchom2 18150 1stfval 18155 2ndfval 18158 xpcpropd 18172 evlfval 18181 efmnd 18836 isga 19264 gsumcom2 19948 gsumxp 19949 ablfaclem3 20062 psrval 21897 mamufval 22382 mamudm 22385 mvmulfval 22532 mavmuldm 22540 mavmul0g 22543 txbas 23557 ptbasfi 23571 txindis 23624 tmsxps 24526 metustexhalf 24546 noxpordpred 27970 aciunf1lem 32761 gsumpart 33151 gsumwrd2dccatlem 33165 gsumwrd2dccat 33166 erlval 33346 rlocval 33347 fedgmullem1 33820 fldextrspunlsplem 33864 esum2dlem 34283 lpadval 34867 cvmliftlem15 35533 mexval 35737 mpstval 35770 mclsval 35798 mclsax 35804 mclsppslem 35818 filnetlem4 36616 poimirlem26 38020 poimirlem28 38022 heiborlem3 38187 cnvref4 38724 elrefrels2 38972 refreleq 38975 elcnvrefrels2 38988 dvhfset 41579 dvhset 41580 dibffval 41639 dibfval 41640 hdmap1fval 42295 dmmpossx2 48835 dmrnxp 49334 imasubclem3 49603 imaf1hom 49605 swapf2f1oaALT 49775 fucofvalg 49815 fucofvalne 49822 fucof21 49844 functhinclem1 49941 functhinclem3 49943 functhinclem4 49944 |
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