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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 5649 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 × 𝐶) = (𝐵 × 𝐷)) | |
| 4 | 1, 2, 3 | syl2anc 584 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 × cxp 5622 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-opab 5161 df-xp 5630 |
| This theorem is referenced by: sqxpeqd 5656 opeliunxp 5691 opeliun2xp 5692 mpomptsx 8008 dmmpossx 8010 fmpox 8011 ovmptss 8035 fparlem3 8056 fparlem4 8057 on2recsov 8596 naddcllem 8604 erssxp 8658 marypha2lem2 9339 ackbij1lem8 10136 r1om 10153 fictb 10154 axcc2lem 10346 axcc2 10347 axdc4lem 10365 fsum2dlem 15693 fsumcom2 15697 ackbijnn 15751 fprod2dlem 15903 fprodcom2 15907 homaval 17955 xpcval 18100 xpchom 18103 xpchom2 18109 1stfval 18114 2ndfval 18117 xpcpropd 18131 evlfval 18140 efmnd 18795 isga 19220 gsumcom2 19904 gsumxp 19905 ablfaclem3 20018 psrval 21871 mamufval 22336 mamudm 22339 mvmulfval 22486 mavmuldm 22494 mavmul0g 22497 txbas 23511 ptbasfi 23525 txindis 23578 tmsxps 24480 metustexhalf 24500 noxpordpred 27949 aciunf1lem 32740 gsumpart 33146 gsumwrd2dccatlem 33159 gsumwrd2dccat 33160 erlval 33340 rlocval 33341 fedgmullem1 33786 fldextrspunlsplem 33830 esum2dlem 34249 lpadval 34833 cvmliftlem15 35492 mexval 35696 mpstval 35729 mclsval 35757 mclsax 35763 mclsppslem 35777 filnetlem4 36575 poimirlem26 37843 poimirlem28 37845 heiborlem3 38010 cnvref4 38539 elrefrels2 38767 refreleq 38770 elcnvrefrels2 38783 dvhfset 41336 dvhset 41337 dibffval 41396 dibfval 41397 hdmap1fval 42052 dmmpossx2 48579 dmrnxp 49078 imasubclem3 49347 imaf1hom 49349 swapf2f1oaALT 49519 fucofvalg 49559 fucofvalne 49566 fucof21 49588 functhinclem1 49685 functhinclem3 49687 functhinclem4 49688 |
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