A generalm atrix equation ∑m s= 0 ∑s t= 0 XtAstXs- t= 0 in unknow n X ofdegree m is con- sidered. The solvability of the equation w ithin som e restricted subsets of n×n m atrices is dis- cussed. The m ethods o...A generalm atrix equation ∑m s= 0 ∑s t= 0 XtAstXs- t= 0 in unknow n X ofdegree m is con- sidered. The solvability of the equation w ithin som e restricted subsets of n×n m atrices is dis- cussed. The m ethods offinding the set ofsolutions in the subsetfor the equation are also provid- ed.展开更多
In terms of Caratheodory metric and Kobayashi metric, distortion theorems for biholomorphic convex mappings on bounded circular convex domains are given.
The authors give some sufficient conditions for the difference of two closed convex sets to be closed in general Banach spaces, not necessarily reflexive.
文摘A generalm atrix equation ∑m s= 0 ∑s t= 0 XtAstXs- t= 0 in unknow n X ofdegree m is con- sidered. The solvability of the equation w ithin som e restricted subsets of n×n m atrices is dis- cussed. The m ethods offinding the set ofsolutions in the subsetfor the equation are also provid- ed.
文摘In terms of Caratheodory metric and Kobayashi metric, distortion theorems for biholomorphic convex mappings on bounded circular convex domains are given.
文摘The authors give some sufficient conditions for the difference of two closed convex sets to be closed in general Banach spaces, not necessarily reflexive.
