ON THE SPECTRUM OF THE UPPER TRIANGULAR DOUBLE BAND MATRIX U(a(0), a(1), a(2); b(0), b(1), b(2)) OVER THE SEQUENCE SPACE c


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DURNA N., KILIC R.

COMMUNICATIONS FACULTY OF SCIENCES UNIVERSITY OF ANKARA-SERIES A1 MATHEMATICS AND STATISTICS, cilt.71, sa.2, ss.554-565, 2022 (ESCI) identifier identifier

Özet

The upper triangular double band matrix U(a(0), a(1), a(2); b(0), b(1), b(2)) is defined on a Banach sequence space by