Assertion: algebra | /r/HasProperty | associative
Facets:
Source sentences:
text: Algebras over a field can be viewed as F-algebras of signature 1 + 1 + A + A×A + A×A + k×A over the category of sets, of signature 1 + A×A over the category of modules (a module with an internal multiplication), and of signature k×A over the category of rings (a ring with a scalar multiplication), when they are associative and unitary.
text: The algebra of biquaternions is associative, but not commutative.