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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 5688 | . 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 1570 × cxp 5661 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-opab 5175 df-xp 5669 |
| This theorem is referenced by: sqxpeqd 5695 opeliunxp 5730 opeliun2xp 5731 mpomptsx 8062 dmmpossx 8064 fmpox 8065 ovmptss 8089 fparlem3 8110 fparlem4 8111 on2recsov 8655 naddcllem 8663 erssxp 8719 marypha2lem2 9397 ackbij1lem8 10210 r1om 10227 fictb 10228 axcc2lem 10421 axcc2 10422 axdc4lem 10440 fsum2dlem 15823 fsumcom2 15827 ackbijnn 15884 fprod2dlem 16036 fprodcom2 16040 homaval 18089 xpcval 18234 xpchom 18237 xpchom2 18243 1stfval 18248 2ndfval 18251 xpcpropd 18265 evlfval 18274 efmnd 18930 isga 19362 gsumcom2 20046 gsumxp 20047 ablfaclem3 20160 psrval 22046 mamufval 22530 mamudm 22533 mvmulfval 22680 mavmuldm 22688 mavmul0g 22691 txbas 23705 ptbasfi 23719 txindis 23772 tmsxps 24674 metustexhalf 24694 noxpordpred 28127 aciunf1lem 32988 gsumpart 33364 gsumwrd2dccatlem 33378 gsumwrd2dccat 33379 erlval 33559 rlocval 33560 fedgmullem1 34000 fldextrspunlsplem 34044 esum2dlem 34463 lpadval 35047 cvmliftlem15 35771 mexval 35975 mpstval 36008 mclsval 36036 mclsax 36042 mclsppslem 36056 filnetlem4 36873 poimirlem26 38278 poimirlem28 38280 heiborlem3 38445 cnvref4 38980 elrefrels2 39228 refreleq 39231 elcnvrefrels2 39244 dvhfset 41835 dvhset 41836 dibffval 41895 dibfval 41896 hdmap1fval 42551 dmmpossx2 49100 dmrnxp 49598 imasubclem3 49867 imaf1hom 49869 swapf2f1oaALT 50039 fucofvalg 50079 fucofvalne 50086 fucof21 50108 functhinclem1 50205 functhinclem3 50207 functhinclem4 50208 |
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