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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 5691 | . 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 5664 |
| 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 2148 ax-9 2156 ax-ext 2738 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-sb 2100 df-clab 2745 df-cleq 2758 df-clel 2841 df-opab 5179 df-xp 5672 |
| This theorem is used by: sqxpeqd 5698 opeliunxp 5733 opeliun2xp 5734 mpomptsx 8070 dmmpossx 8072 fmpox 8073 ovmptss 8097 fparlem3 8118 fparlem4 8119 on2recsov 8663 naddcllem 8671 erssxp 8727 marypha2lem2 9406 ackbij1lem8 10228 r1om 10245 fictb 10246 axcc2lem 10438 axcc2 10439 axdc4lem 10457 fsum2dlem 15847 fsumcom2 15851 ackbijnn 15908 fprod2dlem 16060 fprodcom2 16064 homaval 18113 xpcval 18258 xpchom 18261 xpchom2 18267 1stfval 18272 2ndfval 18275 xpcpropd 18289 evlfval 18298 efmnd 18960 isga 19392 gsumcom2 20076 gsumxp 20077 ablfaclem3 20190 psrval 22102 mamufval 22586 mamudm 22589 mvmulfval 22736 mavmuldm 22744 mavmul0g 22747 txbas 23761 ptbasfi 23775 txindis 23828 tmsxps 24730 metustexhalf 24750 noxpordpred 28183 aciunf1lem 33044 gsumpart 33414 gsumwrd2dccatlem 33428 gsumwrd2dccat 33429 erlval 33609 rlocval 33610 fedgmullem1 34050 fldextrspunlsplem 34094 esum2dlem 34513 lpadval 35098 cvmliftlem15 35811 mexval 36015 mpstval 36048 mclsval 36076 mclsax 36082 mclsppslem 36096 filnetlem4 36933 poimirlem26 38338 poimirlem28 38340 heiborlem3 38505 cnvref4 39040 elrefrels2 39288 refreleq 39291 elcnvrefrels2 39304 dvhfset 41895 dvhset 41896 dibffval 41955 dibfval 41956 hdmap1fval 42611 dmmpossx2 49158 dmrnxp 49656 imasubclem3 49925 imaf1hom 49927 swapf2f1oaALT 50097 fucofvalg 50137 fucofvalne 50144 fucof21 50166 functhinclem1 50263 functhinclem3 50265 functhinclem4 50266 |
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