Theorem nffvmpt1 5650

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 4182	. 2 ⊢ Ⅎ𝑥(𝑥 ∈ 𝐴 ↦ 𝐵)
2		nfcv 2374	. 2 ⊢ Ⅎ𝑥𝐶
3	1, 2	nffv 5649	1 ⊢ Ⅎ𝑥((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝐶)

Syntax hints:  Ⅎwnfc 2361   ↦ cmpt 4150  ‘cfv 5326

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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-ext 2213

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-rex 2516  df-v 2804  df-un 3204  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-br 4089  df-opab 4151  df-mpt 4152  df-iota 5286  df-fv 5334

This theorem is referenced by:  fvmptt  5738  fmptco  5813  offval2  6251  ofrfval2  6252  mptelixpg  6903  dom2lem  6945  cc2  7486  fsumf1o  11952  fsum3cvg2  11956  fsumadd  11968  isummulc2  11988  isumshft  12052  fprodf1o  12150  prdsbas3  13371  txcnp  14997  cnmpt1t  15011  elplyd  15467