What Is the Name for the Product of Unique Prime Factors?

Elam · 2009-11-24T18:11:22+00:00

Is there a name for product of the unique prime factors of a number? For example, for the number 12, it would be 3x2=6. Thanks.

Thread 'About the existence of Hamel basis for vector spaces'

It is well known that a vector space always admits an algebraic (Hamel) basis. This is a theorem that follows from Zorn's lemma based on the Axiom of Choice (AC). Now consider any specific instance of vector space. Since the AC axiom may or may not be included in the underlying set theory, might there be examples of vector spaces in which an Hamel basis actually doesn't exist ?

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Thread 'About the existence of Hamel basis for vector spaces'

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