Theorem fvmptd3 39447

Description: Deduction version of fvmpt 6282. (Contributed by Glauco Siliprandi, 23-Oct-2021.)

Hypotheses

Ref	Expression
fvmptd3.1	⊢ 𝐹 = (𝑥 ∈ 𝐷 ↦ 𝐵)
fvmptd3.2	⊢ (𝑥 = 𝐴 → 𝐵 = 𝐶)
fvmptd3.3	⊢ (𝜑 → 𝐴 ∈ 𝐷)
fvmptd3.4	⊢ (𝜑 → 𝐶 ∈ 𝑉)

Assertion

Ref	Expression
fvmptd3	⊢ (𝜑 → (𝐹‘𝐴) = 𝐶)

Distinct variable groups:   𝑥,𝐴   𝑥,𝐶   𝑥,𝐷

Allowed substitution hints:   𝜑(𝑥)   𝐵(𝑥)   𝐹(𝑥)   𝑉(𝑥)

Proof of Theorem fvmptd3

Step	Hyp	Ref	Expression
1		fvmptd3.3	. 2 ⊢ (𝜑 → 𝐴 ∈ 𝐷)
2		fvmptd3.4	. 2 ⊢ (𝜑 → 𝐶 ∈ 𝑉)
3		nfcv 2764	. . 3 ⊢ Ⅎ𝑥𝐴
4		nfcv 2764	. . 3 ⊢ Ⅎ𝑥𝐶
5		fvmptd3.2	. . 3 ⊢ (𝑥 = 𝐴 → 𝐵 = 𝐶)
6		fvmptd3.1	. . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐷 ↦ 𝐵)
7	3, 4, 5, 6	fvmptf 6301	. 2 ⊢ ((𝐴 ∈ 𝐷 ∧ 𝐶 ∈ 𝑉) → (𝐹‘𝐴) = 𝐶)
8	1, 2, 7	syl2anc 693	1 ⊢ (𝜑 → (𝐹‘𝐴) = 𝐶)

Syntax hints:   → wi 4   = wceq 1483   ∈ wcel 1990   ↦ cmpt 4729  ‘cfv 5888

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-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fv 5896

This theorem is referenced by:  limsuplt2  39985  limsupge  39993  smflimsuplem1  41026  smflimsuplem5  41030  smflimsuplem7  41032