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Theorem ofc12 7710
Description: Function operation on two constant functions. (Contributed by Mario Carneiro, 28-Jul-2014.)
Hypotheses
Ref Expression
ofc12.1 (𝜑𝐴𝑉)
ofc12.2 (𝜑𝐵𝑊)
ofc12.3 (𝜑𝐶𝑋)
Assertion
Ref Expression
ofc12 (𝜑 → ((𝐴 × {𝐵}) ∘f 𝑅(𝐴 × {𝐶})) = (𝐴 × {(𝐵𝑅𝐶)}))

Proof of Theorem ofc12
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 ofc12.1 . . 3 (𝜑𝐴𝑉)
2 ofc12.2 . . . 4 (𝜑𝐵𝑊)
32adantr 486 . . 3 ((𝜑𝑥𝐴) → 𝐵𝑊)
4 ofc12.3 . . . 4 (𝜑𝐶𝑋)
54adantr 486 . . 3 ((𝜑𝑥𝐴) → 𝐶𝑋)
6 fconstmpt 5725 . . . 4 (𝐴 × {𝐵}) = (𝑥𝐴𝐵)
76a1i 11 . . 3 (𝜑 → (𝐴 × {𝐵}) = (𝑥𝐴𝐵))
8 fconstmpt 5725 . . . 4 (𝐴 × {𝐶}) = (𝑥𝐴𝐶)
98a1i 11 . . 3 (𝜑 → (𝐴 × {𝐶}) = (𝑥𝐴𝐶))
101, 3, 5, 7, 9offval2 7700 . 2 (𝜑 → ((𝐴 × {𝐵}) ∘f 𝑅(𝐴 × {𝐶})) = (𝑥𝐴 ↦ (𝐵𝑅𝐶)))
11 fconstmpt 5725 . 2 (𝐴 × {(𝐵𝑅𝐶)}) = (𝑥𝐴 ↦ (𝐵𝑅𝐶))
1210, 11eqtr4di 2818 1 (𝜑 → ((𝐴 × {𝐵}) ∘f 𝑅(𝐴 × {𝐶})) = (𝐴 × {(𝐵𝑅𝐶)}))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4   = wceq 1570  wcel 2146  {csn 4591  cmpt 5194   × cxp 5661  (class class class)co 7416  f cof 7678
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 2148  ax-9 2156  ax-10 2179  ax-11 2195  ax-12 2216  ax-ext 2737  ax-rep 5240  ax-sep 5259  ax-nul 5271  ax-pr 5406
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2569  df-eu 2599  df-clab 2744  df-cleq 2757  df-clel 2840  df-nfc 2914  df-ne 2961  df-ral 3082  df-rex 3092  df-reu 3372  df-rab 3419  df-v 3459  df-sbc 3747  df-csb 3855  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-nul 4287  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4875  df-iun 4960  df-br 5112  df-opab 5176  df-mpt 5195  df-id 5558  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-rn 5674  df-res 5675  df-ima 5676  df-iota 6496  df-fun 6542  df-fn 6543  df-f 6544  df-f1 6545  df-fo 6546  df-f1o 6547  df-fv 6548  df-ov 7419  df-oprab 7420  df-mpo 7421  df-of 7680
This theorem is used by:  pwsdiagmhm  18914  pwsdiaglmhm  21208  psrlmod  22139  coe1mul2  22460  itg2mulc  25937  dgrmulc  26459  lflvsdi2a  39887  lflvsass  39888  lflsc0N  39890  mendlmod  43949  expgrowth  45078
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