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Morteza Koozehgar Kalleji

Morteza Koozehgar Kalleji

Academic rank: Assistant Professor
ORCID: https://orcid.org/0000-0002-7052-7241
Education: PhD.
ScopusId: 55803631900
Faculty: Science
Address: Arak University
Phone:

Research

Title
Fredholmness property of M-elliptic pseudo-differential operator under change variable in its symbol
Type
JournalPaper
Keywords
Pseudo differential operator · Elliptic operator · Spectrum · Parametrix operator · Fredholm operator
Year
2013
Journal Journal of Pseudo-Differential Operators and Applications
DOI
Researchers mohsen Alimohammady ، Morteza Koozehgar Kalleji

Abstract

This paper deals with minimal and maximal pseudo-differential operators Moreover, it is given necessary and sufficient conditions for which these operators can be Fredholm. A description of their essential spectrum has been obtained for operators of non-zero order. Finally, it is shown that change variable preserve Fredholm property of pseudo-differential operators