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ELA

ADDITIVITY OF MAPS ON TRIANGULAR ALGEBRAS

XUEHAN CHENG† AND WU JING

Abstract. In this paper, it is proven that every multiplicative bijective map, Jordan bijective map, Jordan triple bijective map, and elementary surjective map on triangular algebras is automat-ically additive.

Key words. Multiplicative maps, Jordan maps, Jordan triple maps, Elementary maps, Trian-gular algebras, Standard operator algebras, Additivity.

AMS subject classifications.16W99, 47B49, 47L10.

Received by the editors November 26, 2007. Accepted for publication October 24, 2008.

Han-dling Editor: Robert Guralnick.

College of Mathematics & Information, Ludong University, Yantai, 264025, P. R. China.

Sup-ported by NNSF of China (No. 10671086) and NSF of Ludong University (No. LY20062704).

Department of Mathematics & Computer Science, Fayetteville State University, Fayetteville, NC

28301, USA ([email protected]).

Electronic Journal of Linear Algebra ISSN 1081-3810 A publication of the International Linear Algebra Society Volume 17, pp. 597-615, November 2008

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