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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 585 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 × cxp 5622 |
| 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 5149 df-xp 5630 |
| This theorem is referenced by: sqxpeqd 5656 opeliunxp 5691 opeliun2xp 5692 mpomptsx 8010 dmmpossx 8012 fmpox 8013 ovmptss 8036 fparlem3 8057 fparlem4 8058 on2recsov 8597 naddcllem 8605 erssxp 8660 marypha2lem2 9342 ackbij1lem8 10139 r1om 10156 fictb 10157 axcc2lem 10349 axcc2 10350 axdc4lem 10368 fsum2dlem 15723 fsumcom2 15727 ackbijnn 15784 fprod2dlem 15936 fprodcom2 15940 homaval 17989 xpcval 18134 xpchom 18137 xpchom2 18143 1stfval 18148 2ndfval 18151 xpcpropd 18165 evlfval 18174 efmnd 18829 isga 19257 gsumcom2 19941 gsumxp 19942 ablfaclem3 20055 psrval 21905 mamufval 22367 mamudm 22370 mvmulfval 22517 mavmuldm 22525 mavmul0g 22528 txbas 23542 ptbasfi 23556 txindis 23609 tmsxps 24511 metustexhalf 24531 noxpordpred 27959 aciunf1lem 32750 gsumpart 33139 gsumwrd2dccatlem 33153 gsumwrd2dccat 33154 erlval 33334 rlocval 33335 fedgmullem1 33789 fldextrspunlsplem 33833 esum2dlem 34252 lpadval 34836 cvmliftlem15 35496 mexval 35700 mpstval 35733 mclsval 35761 mclsax 35767 mclsppslem 35781 filnetlem4 36579 poimirlem26 37981 poimirlem28 37983 heiborlem3 38148 cnvref4 38685 elrefrels2 38933 refreleq 38936 elcnvrefrels2 38949 dvhfset 41540 dvhset 41541 dibffval 41600 dibfval 41601 hdmap1fval 42256 dmmpossx2 48825 dmrnxp 49324 imasubclem3 49593 imaf1hom 49595 swapf2f1oaALT 49765 fucofvalg 49805 fucofvalne 49812 fucof21 49834 functhinclem1 49931 functhinclem3 49933 functhinclem4 49934 |
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