On the location of the least point of the essential spectrum

[摘要] A new criterion for the least point of the essential spectrum is given for a one term second-order differential operator. This criterion is sharper than the Friedrichs' criterion. Application is given to the singular eigenvalue problem associated with the buckling of a column under selfweight subjected to the constraint of fixed volume. (C) 2002 Elsevier Science B.V. All rights reserved.

[发布日期] 2002-11-01