نتایج جستجو برای: commutator

تعداد نتایج: 1974  

George Janelidze

This paper is a chronological survey, with no proofs, of a direction in categorical algebra, which is based on categorical Galois theory and involves generalized central extensions, commutators, and internal groupoids in Barr exact Mal’tsev and more general categories. Galois theory proposes a notion of central extension, and motivates the study of internal groupoids, which is then used as an a...

Journal: :Kyungpook mathematical journal 2009

Journal: :Journal of Algebra 2014

Journal: :Journal of the American Institute of Electrical Engineers 1922

Journal: :Annalen der Physik und Chemie 1866

Journal: :Bulletin of the American Mathematical Society 1898

Journal: :Physics Letters B 1970

Journal: :Algebras and Representation Theory 2012

Journal: :Journal of the Australian Mathematical Society 1974

Journal: :Filomat 2021

Let R be a unital ring with involution. The pseudo core inverses of differences and products two projections are investigated in R. Some equivalent conditions obtained. As applications, the invertibility commutator pq - qp anti-commutator + characterized, where p; q

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