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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 5656 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 × 𝐶) = (𝐵 × 𝐷)) | |
| 4 | 1, 2, 3 | syl2anc 585 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 × cxp 5629 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-sb 2069 df-clab 2715 df-cleq 2728 df-clel 2811 df-opab 5148 df-xp 5637 |
| This theorem is referenced by: sqxpeqd 5663 opeliunxp 5698 opeliun2xp 5699 mpomptsx 8017 dmmpossx 8019 fmpox 8020 ovmptss 8043 fparlem3 8064 fparlem4 8065 on2recsov 8604 naddcllem 8612 erssxp 8667 marypha2lem2 9349 ackbij1lem8 10148 r1om 10165 fictb 10166 axcc2lem 10358 axcc2 10359 axdc4lem 10377 fsum2dlem 15732 fsumcom2 15736 ackbijnn 15793 fprod2dlem 15945 fprodcom2 15949 homaval 17998 xpcval 18143 xpchom 18146 xpchom2 18152 1stfval 18157 2ndfval 18160 xpcpropd 18174 evlfval 18183 efmnd 18838 isga 19266 gsumcom2 19950 gsumxp 19951 ablfaclem3 20064 psrval 21895 mamufval 22357 mamudm 22360 mvmulfval 22507 mavmuldm 22515 mavmul0g 22518 txbas 23532 ptbasfi 23546 txindis 23599 tmsxps 24501 metustexhalf 24521 noxpordpred 27945 aciunf1lem 32735 gsumpart 33124 gsumwrd2dccatlem 33138 gsumwrd2dccat 33139 erlval 33319 rlocval 33320 fedgmullem1 33773 fldextrspunlsplem 33817 esum2dlem 34236 lpadval 34820 cvmliftlem15 35480 mexval 35684 mpstval 35717 mclsval 35745 mclsax 35751 mclsppslem 35765 filnetlem4 36563 poimirlem26 37967 poimirlem28 37969 heiborlem3 38134 cnvref4 38671 elrefrels2 38919 refreleq 38922 elcnvrefrels2 38935 dvhfset 41526 dvhset 41527 dibffval 41586 dibfval 41587 hdmap1fval 42242 dmmpossx2 48813 dmrnxp 49312 imasubclem3 49581 imaf1hom 49583 swapf2f1oaALT 49753 fucofvalg 49793 fucofvalne 49800 fucof21 49822 functhinclem1 49919 functhinclem3 49921 functhinclem4 49922 |
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