16XX 


Associative rings and algebras {For the commutative case, see 13XX} 

16Rxx 

Rings with polynomial identity 


16R10 
$T$ideals, identities, varieties of rings and algebras 


16R20 
Semiprime p.i. rings, rings embeddable in matrices over commutative rings 


16R30 
Trace rings and invariant theory 


16R40 
Identities other than those of matrices over commutative rings 


16R50 
Other kinds of identities (generalized polynomial, rational, involution) 


16R99 
None of the above, but in this section 