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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 5681 | . 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 5654 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-opab 5172 df-xp 5662 |
| This theorem is used by: sqxpeqd 5688 opeliunxp 5723 opeliun2xp 5724 mpomptsx 8103 dmmpossx 8105 fmpox 8106 ovmptssOLD 8133 fparlem3 8155 fparlem4 8156 on2recsov 8708 naddcllem 8716 erssxp 8772 marypha2lem2 9458 ackbij1lem8 10334 hfom 10351 fictb 10352 axcc2lem 10544 axcc2 10545 axdc4lem 10563 fsum2dlem 15968 fsumcom2 15972 ackbijnn 16029 fprod2dlem 16179 fprodcom2 16183 homaval 18238 xpcval 18383 xpchom 18386 xpchom2 18392 1stfval 18397 2ndfval 18400 xpcpropd 18414 evlfval 18423 efmnd 19098 isga 19538 gsumcom2 20222 gsumxp 20223 ablfaclem3 20336 psrval 22256 mamufval 22740 mamudm 22743 mvmulfval 22890 mavmuldm 22898 mavmul0g 22901 txbas 23919 ptbasfi 23933 txindis 23986 tmsxps 24888 metustexhalf 24908 noxpordpred 28372 aciunf1lem 33331 gsumpart 33700 gsumwrd2dccatlem 33714 gsumwrd2dccat 33715 erlval 33895 rlocval 33896 fedgmullem1 34344 fldextrspunlsplem 34388 esum2dlem 34807 lpadval 35391 cvmliftlem15 36243 mexval 36447 mpstval 36480 mclsval 36508 mclsax 36514 mclsppslem 36528 filnetlem4 37360 poimirlem26 38769 poimirlem28 38771 heiborlem3 38950 cnvref4 39485 elrefrels2 39733 refreleq 39736 elcnvrefrels2 39749 dvhfset 42340 dvhset 42341 dibffval 42400 dibfval 42401 hdmap1fval 43056 ackbij3 46231 dmmpossx2 49664 dmrnxp 50163 imasubclem3 50437 imaf1hom 50439 swapf2f1oaALT 50615 fucofvalg 50655 fucofvalne 50662 fucof21 50684 functhinclem1 50794 functhinclem3 50796 functhinclem4 50797 |
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