Results 21 to 30 of about 29,135 (266)
Commutation matrices and Commutation tensors [PDF]
Linear and Multilinear Algebra, 2018 The commutation matrix was first introduced in statistics as a transposition matrix by Murnaghan in 1938. In this paper, we first investigate the commutation matrix which is employed to transform a matrix into its transpose. We then extend the concept of the commutation matrix to commutation tensor and use the commutation tensor to achieve the ...
Changqing Xu, Lingling He, Zerong Lin
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International Journal of Behavioral Nutrition and Physical Activity, 2019 Background Prospective data are sparse for active commuting to work and body weight in Asia. We assessed the association of 5-year changes in commuting mode with body mass index (BMI) and the indicators of abdominal obesity in Japanese working adults ...
Keisuke Kuwahara +6 more
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Bulletin of the Australian Mathematical Society, 2006 A ring is called a commutator ring if every element is a sum of additive commutators. In this note we give examples of such rings. In particular, we show that given any ring R, a right R-module N, and a nonempty set Ω, EndR(⌖ΩN) and EndR(ΠΩN) are commutator rings if and only if either Ω is infinite or EndR(N) is itself a commutator ring.
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Commutant lifting for commuting row contractions [PDF]
Bulletin of the London Mathematical Society, 2010 one section and references were ...
Davidson, Kenneth R., Le, Trieu
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Quaestiones Geographicae, 2022 Transport is the second energy consumer sector after housing in Algeria. In this article, we explore the energy implication of commuting by considering a panel of socio-economic (SE) and built environment (BE) driving factors. The method is based on four
Boukarta Soufiane, Berezowska-Azzag Ewa
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Transactions of the American Mathematical Society, 1974 Let G be a group generated by x and y, G 2 {G_2} be the commutator subgroup of G, and G 1 {G_1} be the group generated by y and G 2 {G_2} . This paper contains explicit expansions of
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Multiple commutator formulas [PDF]
Israel Journal of Mathematics, 2012 Let A be a quasi-finite R-algebra (i.e., a direct limit of module finite algebras) with identity. Let I_i, i=0,...,m, be two-sided ideals of A, \GL_n(A,I_i) the principal congruence subgroup of level I_i in GL_n(A) and E_n(A,I_i) be the relative elementary subgroup of level I_i.
Hazrat, Roozbeh (R16959), Zhang, Zuhong
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Working From Home and Covid-19: Where Could Residents Move to?
Urban Planning, 2022 As a protective measure during the Covid-19 pandemic, in Spring 2020, a high number of employees began relocating their workplace to their homes, many for the first time.
Johannes Moser +2 more
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Proceedings of the Fifth Israeli Symposium on Theory of Computing and Systems, 2001 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Beigel, Richard, Chang, Richard
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Migration, daily commuting, or second residence? The role of location-specific capital and distance to workplace in regional mobility decisions [PDF]
Demographic ResearchBACKGROUND: If a new job is located in a different region from the place of residence, individuals or households can choose between moving or commuting.
Thomas Skora, Knut Petzold, Heiko Rüger
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