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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 5684 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 × 𝐶) = (𝐵 × 𝐷)) | |
| 4 | 1, 2, 3 | syl2anc 596 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 × cxp 5657 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-opab 5172 df-xp 5665 |
| This theorem is used by: sqxpeqd 5691 opeliunxp 5726 opeliun2xp 5727 mpomptsx 8065 dmmpossx 8067 fmpox 8068 ovmptss 8094 fparlem3 8115 fparlem4 8116 on2recsov 8660 naddcllem 8668 erssxp 8724 marypha2lem2 9410 ackbij1lem8 10232 r1om 10249 fictb 10250 axcc2lem 10442 axcc2 10443 axdc4lem 10461 fsum2dlem 15860 fsumcom2 15864 ackbijnn 15921 fprod2dlem 16073 fprodcom2 16077 homaval 18126 xpcval 18271 xpchom 18274 xpchom2 18280 1stfval 18285 2ndfval 18288 xpcpropd 18302 evlfval 18311 efmnd 18985 isga 19424 gsumcom2 20108 gsumxp 20109 ablfaclem3 20222 psrval 22136 mamufval 22620 mamudm 22623 mvmulfval 22770 mavmuldm 22778 mavmul0g 22781 txbas 23799 ptbasfi 23813 txindis 23866 tmsxps 24768 metustexhalf 24788 noxpordpred 28226 aciunf1lem 33143 gsumpart 33511 gsumwrd2dccatlem 33525 gsumwrd2dccat 33526 erlval 33706 rlocval 33707 fedgmullem1 34147 fldextrspunlsplem 34191 esum2dlem 34610 lpadval 35195 cvmliftlem15 35885 mexval 36089 mpstval 36122 mclsval 36150 mclsax 36156 mclsppslem 36170 filnetlem4 37008 poimirlem26 38403 poimirlem28 38405 heiborlem3 38571 cnvref4 39106 elrefrels2 39354 refreleq 39357 elcnvrefrels2 39370 dvhfset 41961 dvhset 41962 dibffval 42021 dibfval 42022 hdmap1fval 42677 dmmpossx2 49275 dmrnxp 49773 imasubclem3 50040 imaf1hom 50042 swapf2f1oaALT 50212 fucofvalg 50252 fucofvalne 50259 fucof21 50281 functhinclem1 50378 functhinclem3 50380 functhinclem4 50381 |
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