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A LIMIT-POINT CRITERION FOR REAL POLYNOMIALS IN SYMMETRIC QUASI-DIFFERENTIAL EXPRESSIONS OF ARBITRARY ORDER

 

作者: Hilbert Frentzen,  

 

期刊: Quaestiones Mathematicae  （Taylor Available online 1982）
卷期: Volume 5, issue 1  

页码: 83-105

 

ISSN:1607-3606

 

年代: 1982

 

DOI:10.1080/16073606.1982.9631880

 

出版商: Taylor & Francis Group

 

关键词: 34 B 25

 

数据来源: Taylor

 

摘要:

A limit-point criterion for symmetric quasi-differential expressions of arbitrary order with matrix-valued coefficients is given. This criterion is also sufficient for real polynomials in such expressions to be in the limit-point case. In the scalar case it includes a number of known results most of which were proved by asymptotic methods.

 

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