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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 5582 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 × 𝐶) = (𝐵 × 𝐷)) | |
4 | 1, 2, 3 | syl2anc 586 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 × cxp 5555 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-12 2177 ax-ext 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-opab 5131 df-xp 5563 |
This theorem is referenced by: sqxpeqd 5589 opeliunxp 5621 mpomptsx 7764 dmmpossx 7766 fmpox 7767 ovmptss 7790 fparlem3 7811 fparlem4 7812 erssxp 8314 marypha2lem2 8902 ackbij1lem8 9651 r1om 9668 fictb 9669 axcc2lem 9860 axcc2 9861 axdc4lem 9879 fsum2dlem 15127 fsumcom2 15131 ackbijnn 15185 fprod2dlem 15336 fprodcom2 15340 homaval 17293 xpcval 17429 xpchom 17432 xpchom2 17438 1stfval 17443 2ndfval 17446 xpcpropd 17460 evlfval 17469 efmnd 18037 isga 18423 gsumcom2 19097 gsumxp 19098 ablfaclem3 19211 psrval 20144 mamufval 20998 mamudm 21001 mvmulfval 21153 mavmuldm 21161 mavmul0g 21164 txbas 22177 ptbasfi 22191 txindis 22244 tmsxps 23148 metustexhalf 23168 aciunf1lem 30409 fedgmullem1 31027 esum2dlem 31353 lpadval 31949 cvmliftlem15 32547 mexval 32751 mpstval 32784 mclsval 32812 mclsax 32818 mclsppslem 32832 filnetlem4 33731 poimirlem26 34920 poimirlem28 34922 heiborlem3 35093 elrefrels2 35759 refreleq 35762 elcnvrefrels2 35772 dvhfset 38218 dvhset 38219 dibffval 38278 dibfval 38279 hdmap1fval 38934 opeliun2xp 44388 dmmpossx2 44392 |
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