Geodesic
Exponentials of bounded normal operators
Aicha Chaban 1   ; Mohammed Hichem Mortad 2
1 Department of Mathematics University of Chlef (Hassiba Benbouali) BP 151, Chlef, 20000, Algeria
2 Department of Mathematics University of Oran BP 1524, El Menouar, Oran 31000, Algeria and BP 7085 Seddikia, Oran 31013, Algeria
Colloquium Mathematicum, Tome 133 (2013) no. 2, pp. 237-244 Cet article a éte moissonné depuis la source Institute of Mathematics Polish Academy of Sciences

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The present paper is mainly concerned with equations involving exponentials of bounded normal operators. Conditions implying commutativity of normal operators are given, without using the known $2\pi i$-congruence-free hypothesis. This is a continuation of a recent work by the second author.
DOI : 10.4064/cm133-2-10
Keywords: present paper mainly concerned equations involving exponentials bounded normal operators conditions implying commutativity normal operators given without using known i congruence free hypothesis continuation recent work second author

Aicha Chaban  1   ; Mohammed Hichem Mortad  2

1 Department of Mathematics University of Chlef (Hassiba Benbouali) BP 151, Chlef, 20000, Algeria
2 Department of Mathematics University of Oran BP 1524, El Menouar, Oran 31000, Algeria and BP 7085 Seddikia, Oran 31013, Algeria 
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Aicha Chaban; Mohammed Hichem Mortad. Exponentials of bounded normal operators. Colloquium Mathematicum, Tome 133 (2013) no. 2, pp. 237-244. doi: 10.4064/cm133-2-10

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