Theorem bnj564

Description: First-order logic and set theory. (Contributed by Jonathan Ben-Naim, 3-Jun-2011) (New usage is discouraged.)

	Ref	Expression
Hypothesis	bnj564.17	No typesetting found for |- ( ta <-> ( f Fn m /\ ph' /\ ps' ) ) with typecode |-
Assertion	bnj564	$$⊢\tau \to \mathrm{dom}f=m$$

Proof

Step	Hyp	Ref	Expression
1		bnj564.17	Could not format ( ta <-> ( f Fn m /\ ph' /\ ps' ) ) : No typesetting found for |- ( ta <-> ( f Fn m /\ ph' /\ ps' ) ) with typecode |-
2	1	simp1bi	$$⊢\tau \to fFnm$$
3	2	fndmd	$$⊢\tau \to \mathrm{dom}f=m$$