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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 5676 | . 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 5649 |
| 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 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-sb 2100 df-clab 2740 df-cleq 2753 df-clel 2836 df-opab 5168 df-xp 5657 |
| This theorem is used by: sqxpeqd 5683 opeliunxp 5718 opeliun2xp 5719 mpomptsx 8064 dmmpossx 8066 fmpox 8067 ovmptss 8093 fparlem3 8114 fparlem4 8115 on2recsov 8661 naddcllem 8669 erssxp 8725 marypha2lem2 9412 ackbij1lem8 10285 hfom 10302 fictb 10303 axcc2lem 10495 axcc2 10496 axdc4lem 10514 fsum2dlem 15916 fsumcom2 15920 ackbijnn 15977 fprod2dlem 16127 fprodcom2 16131 homaval 18186 xpcval 18331 xpchom 18334 xpchom2 18340 1stfval 18345 2ndfval 18348 xpcpropd 18362 evlfval 18371 efmnd 19046 isga 19485 gsumcom2 20169 gsumxp 20170 ablfaclem3 20283 psrval 22203 mamufval 22687 mamudm 22690 mvmulfval 22837 mavmuldm 22845 mavmul0g 22848 txbas 23866 ptbasfi 23880 txindis 23933 tmsxps 24835 metustexhalf 24855 noxpordpred 28321 aciunf1lem 33238 gsumpart 33606 gsumwrd2dccatlem 33620 gsumwrd2dccat 33621 erlval 33801 rlocval 33802 fedgmullem1 34243 fldextrspunlsplem 34287 esum2dlem 34706 lpadval 35291 cvmliftlem15 36032 mexval 36236 mpstval 36269 mclsval 36297 mclsax 36303 mclsppslem 36317 filnetlem4 37139 poimirlem26 38532 poimirlem28 38534 heiborlem3 38715 cnvref4 39250 elrefrels2 39498 refreleq 39501 elcnvrefrels2 39514 dvhfset 42105 dvhset 42106 dibffval 42165 dibfval 42166 hdmap1fval 42821 dmmpossx2 49393 dmrnxp 49891 imasubclem3 50158 imaf1hom 50160 swapf2f1oaALT 50330 fucofvalg 50370 fucofvalne 50377 fucof21 50399 functhinclem1 50496 functhinclem3 50498 functhinclem4 50499 |
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