| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 8075 dmmpossx 8077 fmpox 8078 ovmptss 8104 fparlem3 8125 fparlem4 8126 on2recsov 8677 naddcllem 8685 erssxp 8741 marypha2lem2 9428 ackbij1lem8 10304 hfom 10321 fictb 10322 axcc2lem 10514 axcc2 10515 axdc4lem 10533 fsum2dlem 15936 fsumcom2 15940 ackbijnn 15997 fprod2dlem 16147 fprodcom2 16151 homaval 18206 xpcval 18351 xpchom 18354 xpchom2 18360 1stfval 18365 2ndfval 18368 xpcpropd 18382 evlfval 18391 efmnd 19066 isga 19505 gsumcom2 20189 gsumxp 20190 ablfaclem3 20303 psrval 22223 mamufval 22707 mamudm 22710 mvmulfval 22857 mavmuldm 22865 mavmul0g 22868 txbas 23886 ptbasfi 23900 txindis 23953 tmsxps 24855 metustexhalf 24875 noxpordpred 28339 aciunf1lem 33256 gsumpart 33624 gsumwrd2dccatlem 33638 gsumwrd2dccat 33639 erlval 33819 rlocval 33820 fedgmullem1 34261 fldextrspunlsplem 34305 esum2dlem 34724 lpadval 35308 cvmliftlem15 36063 mexval 36267 mpstval 36300 mclsval 36328 mclsax 36334 mclsppslem 36348 filnetlem4 37169 poimirlem26 38564 poimirlem28 38566 heiborlem3 38747 cnvref4 39282 elrefrels2 39530 refreleq 39533 elcnvrefrels2 39546 dvhfset 42137 dvhset 42138 dibffval 42197 dibfval 42198 hdmap1fval 42853 dmmpossx2 49448 dmrnxp 49946 imasubclem3 50213 imaf1hom 50215 swapf2f1oaALT 50385 fucofvalg 50425 fucofvalne 50432 fucof21 50454 functhinclem1 50551 functhinclem3 50553 functhinclem4 50554 |
| Copyright terms: Public domain | W3C validator |