The Tensor Product of Semigroups and the Operator Equation SX - XT = A
J. Freeman
Indiana University Mathematics Journal
1970
text
pdf
10.1512/iumj.1970.19.19065
10.1512/iumj.1970.19.19065
en
Indiana Univ. Math. J. 19 (1970) 819 - 828
state-of-the-art mathematics
http://iumj.org/access/