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Trace and determinant preserving maps of matrices

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成果类型:
期刊论文
作者:
Huang, Huajun.;Liu, Chih-Neng;Szokol, Patricia;Tsai, Ming-Cheng*;Zhang, Jun
通讯作者:
Tsai, Ming-Cheng
作者机构:
[Huang, Huajun.] Auburn Univ, Dept Math & Stat, Auburn, AL 36849 USA.
[Liu, Chih-Neng] Natl Sun Yat Sen Univ, Dept Appl Math, Kaohsiung 80424, Taiwan.
[Szokol, Patricia] Univ Debrecen, Inst Math, MTA DE Lendulet Funct Anal Res Grp, POB 12, H-4010 Debrecen, Hungary.
[Szokol, Patricia] Univ Miskolc, Inst Math, H-3515 Miskolc, Hungary.
[Tsai, Ming-Cheng] Natl Taipei Univ Technol, Gen Educ Ctr, Taipei 10608, Taiwan.
通讯机构:
[Tsai, Ming-Cheng] N
Natl Taipei Univ Technol, Gen Educ Ctr, Taipei 10608, Taiwan.
语种:
英文
关键词:
Determinant;Trace;Preserver
期刊:
Linear Algebra and its Applications
ISSN:
0024-3795
年:
2016
卷:
507
页码:
373-388
基金类别:
Taiwan MOST [104-2811-M-110-027]; Hungarian Academy of SciencesHungarian Academy of Sciences [LP2012-46/2012]; Hungarian Scientific Research Fund (OTKA)Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) [K115383]; HAS [104-2911-I-110-508]; Ministry of Science and Technology, R.O.C. [104-2911-I-110-508]
机构署名:
本校为其他机构
院系归属:
数学与统计学学院
摘要:
We show that if a map ϕon the set of positive definite matrices satisfiesdet⁡(A+B)=det⁡(ϕ(A)+ϕ(B)),ortr(AB−1)=tr(ϕ(A)ϕ(B)−1)with det⁡ϕ(I)=1, then ϕis of the form ϕ(A)=M⁎AM or ϕ(A)=M⁎AtM for some invertible matrix M with det⁡(M⁎M)=1. We also characterize the map ϕ:S→S preserving the similar trace equality or the determinant equalitydet⁡(tA+(1−t)B)=det⁡(tϕ(A)+(1−t)ϕ(B...

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