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Theorem ofc12 7724
Description: Function operation on two constant functions. (Contributed by Mario Carneiro, 28-Jul-2014.)
Hypotheses
Ref Expression
ofc12.1 (𝜑 → 𝐴 ∈ 𝑉)
ofc12.2 (𝜑 → 𝐵 ∈ 𝑊)
ofc12.3 (𝜑 → 𝐶 ∈ 𝑋)
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 (𝜑 → 𝐴 ∈ 𝑉)
2 ofc12.2 . . . 4 (𝜑 → 𝐵 ∈ 𝑊)
32adantr 486 . . 3 ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑊)
4 ofc12.3 . . . 4 (𝜑 → 𝐶 ∈ 𝑋)
54adantr 486 . . 3 ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝑋)
6 fconstmpt 5712 . . . 4 (𝐴 × {𝐵}) = (𝑥 ∈ 𝐴 ↦ 𝐵)
76a1i 11 . . 3 (𝜑 → (𝐴 × {𝐵}) = (𝑥 ∈ 𝐴 ↦ 𝐵))
8 fconstmpt 5712 . . . 4 (𝐴 × {𝐶}) = (𝑥 ∈ 𝐴 ↦ 𝐶)
98a1i 11 . . 3 (𝜑 → (𝐴 × {𝐶}) = (𝑥 ∈ 𝐴 ↦ 𝐶))
101, 3, 5, 7, 9offval2 7714 . 2 (𝜑 → ((𝐴 × {𝐵}) ∘f 𝑅(𝐴 × {𝐶})) = (𝑥 ∈ 𝐴 ↦ (𝐵𝑅𝐶)))
11 fconstmpt 5712 . 2 (𝐴 × {(𝐵𝑅𝐶)}) = (𝑥 ∈ 𝐴 ↦ (𝐵𝑅𝐶))
1210, 11eqtr4di 2813 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 1569   ∈ wcel 2144  {csn 4584   ↦ cmpt 5185   × cxp 5648  (class class class)co 7421   ∘f cof 7692
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-rep 5231  ax-sep 5248  ax-nul 5259  ax-pr 5390
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-ss 3896  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-iun 4952  df-br 5103  df-opab 5167  df-mpt 5186  df-id 5545  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-res 5662  df-ima 5663  df-iota 6494  df-fun 6541  df-fn 6542  df-f 6543  df-f1 6544  df-fo 6545  df-f1o 6546  df-fv 6547  df-ov 7424  df-oprab 7425  df-mpo 7426  df-of 7694
This theorem is used by:  pwsdiagmhm  19033  pwsdiaglmhm  21338  psrlmod  22273  coe1mul2  22594  itg2mulc  26074  dgrmulc  26596  lflvsdi2a  40231  lflvsass  40232  lflsc0N  40234  mendlmod  44285  expgrowth  45413
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