> > > semigroup is more frequent. >
If I remember correctly, it was not monoids which were in the hierarchy, it was the semigroups. They were replaced without explanation. -- FL -- 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 on the web visit https://groups.google.com/d/msgid/metamath/d761fcb8-62e2-42f5-bb89-ebe100d1130c%40googlegroups.com.
