1972e
Jan Kisyński. On the connections between cosine operator functions and one parameter semi-groups and groups of operators. Technical Report, University of Warsaw, Institute of Mathematics, Warsaw, Poland, 9pp, July 1972.
Jan Kisyński. On the connections between cosine operator functions and one parameter semi-groups and groups of operators. Technical Report, University of Warsaw, Institute of Mathematics, Warsaw, Poland, 9pp, July 1972.