Research reports by Zhijian Yuan

Here are the reports authored by Zhijian Yuan. See the reports of all authors.

Helsinki University of Technology Institute of Mathematics Research Reports A

A468: Jarmo Malinen, Olavi Nevanlinna, Zhijian Yuan; On a tauberian condition for bounded linear operators [pdf][ps] abstract: [pdf][ps]; Received 2004-05-18 * Power bounded, Ritt resolvent condition, tauberian theorem * AMS 47A10, 40E05, 47A30, 47D03 * 10 pages
A467: Jarmo Malinen, Olavi Nevanlinna, Ville Turunen, Zhijian Yuan; A lower bound for the differences of powers of linear operators [pdf][ps] abstract: [pdf][ps]; Received 2004-03-18 / Revised 2004-05-18 * Berkani's conjecture, quasi-nilpotent linear operator, differences of powers, decay * AMS 47A30, 47D03, 47A10, 30C45 * 10 pages

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