16XX 


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

16Wxx 

Rings and algebras with additional structure 


16W10 
Rings with involution; Lie, Jordan and other nonassociative structures [See also 17B60, 17C50, 46Kxx] 


16W20 
Automorphisms and endomorphisms 


16W22 
Actions of groups and semigroups; invariant theory 


16W25 
Derivations, actions of Lie algebras 


16W30 
Coalgebras, bialgebras, Hopf algebras [See also 16S40, 57T05]; rings, modules, etc. on which these act 


16W35 
Ringtheoretic aspects of quantum groups [See also 17B37, 20G42, 81R50] 


16W50 
Graded rings and modules 


16W55 
"Super'' (or "skew'') structure [See also 17A70, 17Bxx, 17C70} {For exterior algebras, see 15A75; for Clifford algebras, see 11E88, 15A66]} 


16W60 
Valuations, completions, formal power series and related constructions [See also 13Jxx] 


16W70 
Filtered rings; filtrational and graded techniques 


16W80 
Topological and ordered rings and modules [See also 06F25, 13Jxx] 


16W99 
None of the above, but in this section 