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Theorem nfofr 5718
Description: Hypothesis builder for function relation. (Contributed by Mario Carneiro, 28-Jul-2014.)
Ref Expression
nfof.1  |-  F/_ x R
Ref Expression
nfofr  |-  F/_ x  oR R
Distinct variable group:    x, R

Proof of Theorem nfofr
StepHypRef Expression
1 nfcv 2178 1  |-  F/_ x  oR R
Colors of variables: wff set class
Syntax hints:   F/_wnfc 2165    oRcofr 5711
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-gen 1338  ax-17 1419
This theorem depends on definitions:  df-bi 110  df-nf 1350  df-nfc 2167
This theorem is referenced by: (None)
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