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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 5677 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 × 𝐶) = (𝐵 × 𝐷)) | |
| 4 | 1, 2, 3 | syl2anc 595 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1563 × cxp 5650 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-ex 1803 df-sb 2094 df-clab 2744 df-cleq 2757 df-clel 2840 df-opab 5168 df-xp 5658 |
| This theorem is referenced by: sqxpeqd 5684 opeliunxp 5719 opeliun2xp 5720 mpomptsx 8049 dmmpossx 8051 fmpox 8052 ovmptss 8076 fparlem3 8097 fparlem4 8098 on2recsov 8642 naddcllem 8650 erssxp 8706 marypha2lem2 9384 ackbij1lem8 10197 r1om 10214 fictb 10215 axcc2lem 10408 axcc2 10409 axdc4lem 10427 fsum2dlem 15811 fsumcom2 15815 ackbijnn 15872 fprod2dlem 16024 fprodcom2 16028 homaval 18078 xpcval 18223 xpchom 18226 xpchom2 18232 1stfval 18237 2ndfval 18240 xpcpropd 18254 evlfval 18263 efmnd 18919 isga 19352 gsumcom2 20036 gsumxp 20037 ablfaclem3 20150 psrval 22025 mamufval 22510 mamudm 22513 mvmulfval 22660 mavmuldm 22668 mavmul0g 22671 txbas 23685 ptbasfi 23699 txindis 23752 tmsxps 24654 metustexhalf 24674 noxpordpred 28104 aciunf1lem 32919 gsumpart 33296 gsumwrd2dccatlem 33310 gsumwrd2dccat 33311 erlval 33491 rlocval 33492 fedgmullem1 33936 fldextrspunlsplem 33980 esum2dlem 34399 lpadval 34983 cvmliftlem15 35661 mexval 35865 mpstval 35898 mclsval 35926 mclsax 35932 mclsppslem 35946 filnetlem4 36754 poimirlem26 38157 poimirlem28 38159 heiborlem3 38324 cnvref4 38861 elrefrels2 39109 refreleq 39112 elcnvrefrels2 39125 dvhfset 41716 dvhset 41717 dibffval 41776 dibfval 41777 hdmap1fval 42432 dmmpossx2 48968 dmrnxp 49466 imasubclem3 49735 imaf1hom 49737 swapf2f1oaALT 49907 fucofvalg 49947 fucofvalne 49954 fucof21 49976 functhinclem1 50073 functhinclem3 50075 functhinclem4 50076 |
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