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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 5657 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 × 𝐶) = (𝐵 × 𝐷)) | |
| 4 | 1, 2, 3 | syl2anc 585 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 × cxp 5630 |
| 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 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-opab 5163 df-xp 5638 |
| This theorem is referenced by: sqxpeqd 5664 opeliunxp 5699 opeliun2xp 5700 mpomptsx 8018 dmmpossx 8020 fmpox 8021 ovmptss 8045 fparlem3 8066 fparlem4 8067 on2recsov 8606 naddcllem 8614 erssxp 8669 marypha2lem2 9351 ackbij1lem8 10148 r1om 10165 fictb 10166 axcc2lem 10358 axcc2 10359 axdc4lem 10377 fsum2dlem 15705 fsumcom2 15709 ackbijnn 15763 fprod2dlem 15915 fprodcom2 15919 homaval 17967 xpcval 18112 xpchom 18115 xpchom2 18121 1stfval 18126 2ndfval 18129 xpcpropd 18143 evlfval 18152 efmnd 18807 isga 19232 gsumcom2 19916 gsumxp 19917 ablfaclem3 20030 psrval 21883 mamufval 22348 mamudm 22351 mvmulfval 22498 mavmuldm 22506 mavmul0g 22509 txbas 23523 ptbasfi 23537 txindis 23590 tmsxps 24492 metustexhalf 24512 noxpordpred 27961 aciunf1lem 32751 gsumpart 33156 gsumwrd2dccatlem 33170 gsumwrd2dccat 33171 erlval 33351 rlocval 33352 fedgmullem1 33806 fldextrspunlsplem 33850 esum2dlem 34269 lpadval 34853 cvmliftlem15 35511 mexval 35715 mpstval 35748 mclsval 35776 mclsax 35782 mclsppslem 35796 filnetlem4 36594 poimirlem26 37891 poimirlem28 37893 heiborlem3 38058 cnvref4 38595 elrefrels2 38843 refreleq 38846 elcnvrefrels2 38859 dvhfset 41450 dvhset 41451 dibffval 41510 dibfval 41511 hdmap1fval 42166 dmmpossx2 48691 dmrnxp 49190 imasubclem3 49459 imaf1hom 49461 swapf2f1oaALT 49631 fucofvalg 49671 fucofvalne 49678 fucof21 49700 functhinclem1 49797 functhinclem3 49799 functhinclem4 49800 |
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