Is there any set of wffs? Is there an equality (not equivalence) of wffs? So ` -. -. ph =/= ph ` .
Is a mapping of wffs into classes possible? Clarification very appreciated! Thank you! Peter Dolland -- You received this message because you are subscribed to the Google Groups "Metamath" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/metamath/77eb471f-c5cc-4fb3-a68a-a70d37f415f1%40gmx.de.
