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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 5663 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 × 𝐶) = (𝐵 × 𝐷)) | |
4 | 1, 2, 3 | syl2anc 584 | 1 ⊢ (𝜑 → (𝐴 × 𝐶) = (𝐵 × 𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1541 × cxp 5636 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-ext 2702 |
This theorem depends on definitions: df-bi 206 df-an 397 df-ex 1782 df-sb 2068 df-clab 2709 df-cleq 2723 df-clel 2809 df-opab 5173 df-xp 5644 |
This theorem is referenced by: sqxpeqd 5670 opeliunxp 5704 mpomptsx 8001 dmmpossx 8003 fmpox 8004 ovmptss 8030 fparlem3 8051 fparlem4 8052 on2recsov 8619 naddcllem 8627 erssxp 8678 marypha2lem2 9381 ackbij1lem8 10172 r1om 10189 fictb 10190 axcc2lem 10381 axcc2 10382 axdc4lem 10400 fsum2dlem 15666 fsumcom2 15670 ackbijnn 15724 fprod2dlem 15874 fprodcom2 15878 homaval 17931 xpcval 18079 xpchom 18082 xpchom2 18088 1stfval 18093 2ndfval 18096 xpcpropd 18111 evlfval 18120 efmnd 18694 isga 19085 gsumcom2 19766 gsumxp 19767 ablfaclem3 19880 psrval 21354 mamufval 21771 mamudm 21774 mvmulfval 21928 mavmuldm 21936 mavmul0g 21939 txbas 22955 ptbasfi 22969 txindis 23022 tmsxps 23929 metustexhalf 23949 noxpordpred 27308 aciunf1lem 31645 gsumpart 31967 fedgmullem1 32411 esum2dlem 32780 lpadval 33378 cvmliftlem15 33979 mexval 34183 mpstval 34216 mclsval 34244 mclsax 34250 mclsppslem 34264 filnetlem4 34929 poimirlem26 36177 poimirlem28 36179 heiborlem3 36345 cnvref4 36884 elrefrels2 37053 refreleq 37056 elcnvrefrels2 37069 dvhfset 39616 dvhset 39617 dibffval 39676 dibfval 39677 hdmap1fval 40332 opeliun2xp 46528 dmmpossx2 46532 functhinclem1 47181 functhinclem3 47183 functhinclem4 47184 |
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