Metamath Proof Explorer


Theorem elrnustOLD

Description: Obsolete version of elfvunirn as of 12-Jan-2025. (Contributed by Thierry Arnoux, 16-Nov-2017) (Proof modification is discouraged.) (New usage is discouraged.)

Ref Expression
Assertion elrnustOLD
|- ( U e. ( UnifOn ` X ) -> U e. U. ran UnifOn )

Proof

Step Hyp Ref Expression
1 elfvunirn
 |-  ( U e. ( UnifOn ` X ) -> U e. U. ran UnifOn )