Theorem nffvmpt1 5659

Description: Bound-variable hypothesis builder for mapping, special case. (Contributed by Mario Carneiro, 25-Dec-2016.)

Assertion

Ref	Expression
nffvmpt1	⊢ Ⅎ𝑥((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝐶)

Distinct variable group:   𝑥,𝐶

Allowed substitution hints:   𝐴(𝑥)   𝐵(𝑥)

Proof of Theorem nffvmpt1

Step	Hyp	Ref	Expression
1		nfmpt1 4187	. 2 ⊢ Ⅎ𝑥(𝑥 ∈ 𝐴 ↦ 𝐵)
2		nfcv 2375	. 2 ⊢ Ⅎ𝑥𝐶
3	1, 2	nffv 5658	1 ⊢ Ⅎ𝑥((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝐶)

Syntax hints:  Ⅎwnfc 2362   ↦ cmpt 4155  ‘cfv 5333

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2213

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-rex 2517  df-v 2805  df-un 3205  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-br 4094  df-opab 4156  df-mpt 4157  df-iota 5293  df-fv 5341

This theorem is referenced by:  fvmptt  5747  fmptco  5821  offval2  6260  ofrfval2  6261  mptelixpg  6946  dom2lem  6988  cc2  7529  fsumf1o  12014  fsum3cvg2  12018  fsumadd  12030  isummulc2  12050  isumshft  12114  fprodf1o  12212  prdsbas3  13433  txcnp  15065  cnmpt1t  15079  elplyd  15535