Jorgensen, Palle ETBratteli, OlaRobinson, Derek2015-12-130025-5874http://hdl.handle.net/1885/94934We demonstrate that the structure of complex second-order strongly elliptic operators H on Rd with coefficients invariant under translation by Zd can be analyzed through decomposition in terms of versions Hz, z ∈ Td, of H with z-periodic boundary conditSpectral asymptotics of periodic elliptic operators19992015-12-12