The fundamental theorem of affine geometry in regular L0-modules
The fundamental theorem of affine geometry in regular L0-modules
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DOI:
10.1016/j.jmaa.2021.125827
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发表时间:
2021-07
影响因子:
1.3
通讯作者:
Mingzhi Wu;T. Guo;Long Long-Long
中科院分区:
文献类型:
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作者:
Mingzhi Wu;T. Guo;Long Long-Long
Abstract Let (Ω, F, P) be a probability space and L 0 (F) the algebra of equivalence classes of real-valued random variables defined on (Ω, F, P). A left module M over the algebra L 0 (F)(briefly, an L 0 (F)-module) is said to be regular if x= y for any given two elements x and y in M such that there exists a countable partition {A n, n∈ N} of Ω to F such that I˜ A n⋅ x= I˜ A n⋅ y for each n∈ N, where I A n is the characteristic function of A n and I˜ A n its equivalence class. The purpose of this paper is to establish the fundamental theorem of affine geometry in regular L 0 (F)-modules: let V and V′ be two regular L 0 (F)-modules such that V contains a free L 0 (F)-submodule of rank 2, if T: V→ V′ is stable and invertible and maps each L 0-line segment to an L 0-line segment, then T must be L 0-affine.