Springer and the Iranian Mathematical Society (IMS)Bulletin of the Iranian Mathematical Society1017-060X43520171001On two classes of third order boundary value problems with finite spectrum10891099987ENJ.J.AoSchool of Mathematical Sciences, Inner Mongolia University, Hohhot 010021, China
and College of Sciences, Inner Mongolia University of Technology, Hohhot 010051, China.Journal Article20151108The spectral analysis of two classes of third order boundary value problems is investigated. For every positive integer $m$ we construct two classes of regular third order boundary value problems with at most $2m+1$ eigenvalues, counting multiplicity. These kinds of finite spectrum results are previously known only for even order boundary value problems.http://bims.iranjournals.ir/article_987_66c828371116cf5ebbb08bd5f732ce45.pdf