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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 5134 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 × 𝐶) = (𝐵 × 𝐷)) | |
4 | 1, 2, 3 | syl2anc 693 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1483 × cxp 5112 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-opab 4713 df-xp 5120 |
This theorem is referenced by: sqxpeqd 5141 opeliunxp 5170 mpt2mptsx 7233 dmmpt2ssx 7235 fmpt2x 7236 ovmptss 7258 fparlem3 7279 fparlem4 7280 erssxp 7765 marypha2lem2 8342 ackbij1lem8 9049 r1om 9066 fictb 9067 axcc2lem 9258 axcc2 9259 axdc4lem 9277 fsum2dlem 14501 fsumcom2 14505 fsumcom2OLD 14506 ackbijnn 14560 fprod2dlem 14710 fprodcom2 14714 fprodcom2OLD 14715 homaval 16681 xpcval 16817 xpchom 16820 xpchom2 16826 1stfval 16831 2ndfval 16834 xpcpropd 16848 evlfval 16857 isga 17724 symgval 17799 gsumcom2 18374 gsumxp 18375 ablfaclem3 18486 psrval 19362 mamufval 20191 mamudm 20194 mvmulfval 20348 mavmuldm 20356 mavmul0g 20359 txbas 21370 ptbasfi 21384 txindis 21437 tmsxps 22341 metustexhalf 22361 aciunf1lem 29462 esum2dlem 30154 cvmliftlem15 31280 mexval 31399 mpstval 31432 mclsval 31460 mclsax 31466 mclsppslem 31480 filnetlem4 32376 poimirlem26 33435 poimirlem28 33437 heiborlem3 33612 dvhfset 36369 dvhset 36370 dibffval 36429 dibfval 36430 hdmap1fval 37086 opeliun2xp 42111 dmmpt2ssx2 42115 |
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