Operators and Matrices · Volume 5, Issue 4 Indefinite boundary value problems on graphs 05-43 Pages 565-584 DOI 10.7153/oam-05-43 Downloads Short PDF Full PDF PNG Authors Sonja Currie Bruce A. Watson Keywords differential operators graphs indefinite half-range completeness eigenvalue asymptotics Subject classes 34B09 34B45 34L10 34L20