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Non-real zeros of linear differential polynomials |
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| Authors: | J K Langley |
| Institution: | (1) School Of Mathematical Sciences, University Of Nottingham, Nottingham, NG7 2RD, U.K. |
| Abstract: | Let f be a real entire function with finitely many non-real zeros, not of the form f = Ph with P a polynomial and h in the Laguerre-Pólya class. Lower bounds are given for the number of non-real zeros of f″ + ω f, where ω is a positive real constant. |
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