Theorem ofmresval 7678

Description: Value of a restriction of the function operation map. (Contributed by NM, 20-Oct-2014.)

Hypotheses

Ref	Expression
ofmresval.f	⊢ (𝜑 → 𝐹 ∈ 𝐴)
ofmresval.g	⊢ (𝜑 → 𝐺 ∈ 𝐵)

Assertion

Ref	Expression
ofmresval	⊢ (𝜑 → (𝐹( ∘f 𝑅 ↾ (𝐴 × 𝐵))𝐺) = (𝐹 ∘f 𝑅𝐺))

Proof of Theorem ofmresval

Step	Hyp	Ref	Expression
1		ofmresval.f	. 2 ⊢ (𝜑 → 𝐹 ∈ 𝐴)
2		ofmresval.g	. 2 ⊢ (𝜑 → 𝐺 ∈ 𝐵)
3		ovres 7564	. 2 ⊢ ((𝐹 ∈ 𝐴 ∧ 𝐺 ∈ 𝐵) → (𝐹( ∘f 𝑅 ↾ (𝐴 × 𝐵))𝐺) = (𝐹 ∘f 𝑅𝐺))
4	1, 2, 3	syl2anc 593	1 ⊢ (𝜑 → (𝐹( ∘f 𝑅 ↾ (𝐴 × 𝐵))𝐺) = (𝐹 ∘f 𝑅𝐺))

Syntax hints:   → wi 4   = wceq 1562   ∈ wcel 2144   × cxp 5647   ↾ cres 5651  (class class class)co 7398   ∘_f cof 7660

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1817  ax-4 1831  ax-5 1932  ax-6 1989  ax-7 2030  ax-8 2146  ax-9 2154  ax-ext 2736  ax-sep 5248  ax-pr 5392

This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1101  df-tru 1565  df-fal 1575  df-ex 1802  df-sb 2093  df-clab 2743  df-cleq 2756  df-clel 2839  df-ral 3079  df-rex 3089  df-rab 3417  df-v 3458  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-nul 4288  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5103  df-opab 5165  df-xp 5655  df-res 5661  df-iota 6479  df-fv 6531  df-ov 7401

This theorem is referenced by:  psradd  21992  dchrmul  27314  ldualvadd  39758