Theorem nfof 5737

Description: Hypothesis builder for function operation. (Contributed by Mario Carneiro, 20-Jul-2014.)

Hypothesis

Ref	Expression
nfof.1	|- F/_ x R

Assertion

Ref	Expression
nfof	|- F/_ x oF R

Distinct variable group:   x, R

Proof of Theorem nfof

Step	Hyp	Ref	Expression
1		nfcv 2219	1 |- F/_ x oF R

Syntax hints:   F/_wnfc 2206   oFcof 5730

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-gen 1378  ax-17 1459

This theorem depends on definitions:  df-bi 115  df-nf 1390  df-nfc 2208

This theorem is referenced by: (None)