The minimum modulus of a linear operator and its use in spectral theory

Instytut Matematyczny Polskiej Akademii Nauk / Institute of Mathematics / Publishing house / Journals and Serials / Studia Mathematica / All issues

H. Gindler, A. Taylor Studia Mathematica 22 (1962), 15-41 DOI: 10.4064/sm-22-1-15-41