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WHEN LATTICE HOMOMORPHISMS OF ARCHIMEDEAN VECTOR LATTICES ARE RIESZ HOMOMORPHISMS

Published online by Cambridge University Press:  09 October 2009

MOHAMED ALI TOUMI*
Affiliation:
Département de Mathématiques, Faculté des Sciences de Bizerte, 7021, Zarzouna, Bizerte, Tunisia (email: [email protected])
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Abstract

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Let A, B be Archimedean vector lattices and let (ui)iI, (vi)iI be maximal orthogonal systems of A and B, respectively. In this paper, we prove that if T is a lattice homomorphism from A into B such that for each λ∈ℝ+ and iI, then T is linear. This generalizes earlier results of Ercan and Wickstead (Math. Nachr279 (9–10) (2006), 1024–1027), Lochan and Strauss (J. London Math. Soc. (2) 25 (1982), 379–384), Mena and Roth (Proc. Amer. Math. Soc.71 (1978), 11–12) and Thanh (Ann. Univ. Sci. Budapest. Eotvos Sect. Math.34 (1992), 167–171).

Type
Research Article
Copyright
Copyright © Australian Mathematical Publishing Association Inc. 2009

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