Operators and Matrices · Volume 14, Issue 2 Semigroup generations of unbounded block operator matrices based on the space decomposition 14-23 Pages 295-304 DOI 10.7153/oam-2020-14-23 Downloads Short PDF Full PDF PNG Authors Jie Liu Junjie Huang Alatancang Chen Keywords unbounded block operator matrix generator C0 semigroup space decomposition Subject classes 47D03 47B99 37K99