In this paper, we consider the planar self-affine measures mu(M,D) generated by an expanding matrix M is an element of M-2(Z) and an integer digit set D = {((0)(0)), ((alpha 1)(alpha 2)), ((beta 1)(beta 2))} with alpha(1)beta(2) - alpha(2)beta(1) not equal 0. We show that if det(M) is not an element of 3Z, then the mutually orthogonal exponential functions in L-2(mu(M,D)) is finite, and the exact maximal cardinality is given. (C) 2018 Elsevier Inc. All rights reserved.
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Shaanxi Normal Univ, Coll Math & Informat Sci, Xian 710062, Peoples R ChinaShaanxi Normal Univ, Coll Math & Informat Sci, Xian 710062, Peoples R China
机构:
Hong Kong Inst Educ, Dept Math & Informat Technol, Tai Po, Hong Kong, Peoples R ChinaHong Kong Inst Educ, Dept Math & Informat Technol, Tai Po, Hong Kong, Peoples R China
Leung, King-Shun
Luo, Jun Jason
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Chongqing Univ, Coll Math & Stat, Chongqing 401331, Peoples R ChinaHong Kong Inst Educ, Dept Math & Informat Technol, Tai Po, Hong Kong, Peoples R China
机构:
Changsha Univ Sci & Technol, Sch Math & Stat, Changsha 410114, Hunan, Peoples R China
Changsha Univ Sci & Technol, Hunan Prov Key Lab Math Modeling & Anal Engn, Changsha 410114, Hunan, Peoples R ChinaChangsha Univ Sci & Technol, Sch Math & Stat, Changsha 410114, Hunan, Peoples R China
Su, Juan
Wang, Zhi-Yong
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Hunan First Normal Univ, Coll Math & Computat Sci, Changsha 410205, Hunan, Peoples R ChinaChangsha Univ Sci & Technol, Sch Math & Stat, Changsha 410114, Hunan, Peoples R China
Wang, Zhi-Yong
Chen, Ming-Liang
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Sun Yat Sen Univ, Sch Math, Guangzhou 510275, Peoples R ChinaChangsha Univ Sci & Technol, Sch Math & Stat, Changsha 410114, Hunan, Peoples R China