Results 41 to 50 of about 3,342 (65)
Characterizations and representations of the group inverse involving idempotents [PDF]
, 2011 This paper is to present some results on the group invertibility of products and differences of idempotents. In addition, some formulae for the group inverse of sums, differences and products of idempotents are established by using some given ...
Deng, Chun Yuan, Chun Yuan Deng
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, 1974 Let N be an ideal of a ring A. We say that idempotents modulo N can be lifted provided that for every a of A such that a2-a ∈ N there exists an element e2=e ∈ A such that e-a ∈ N.
Kwangil Koh
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Unbounded symmetrizable idempotents [PDF]
, 2012 The relationship between closed unbounded idempotents and dense decompositions of a Hilbert space is explored by extending the notion of compatibility between closed subspaces and positive bounded ...
Gonzalez, M. Celeste +4 more
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, 2022 Continuing the study of interactions between radical theory and corners, subrings of the form eAe, where e is an idempotent of a ring A, we examine radicals characterized by the presence or absence of idempotents of various types, relative versions of ...
Barry Gardner (14737198) +1 more
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, 1971 In this note we offer an elementary entirely self-contained proof of a theorem of Kaplansky on idempotents in complex group rings.
D. S. Passman
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On algebras generated by idempotents
, 2017 Idempotents ($e^2=e$) in (nonassociative commutative) algebras (e.g., Jordan algebras) behave sometimes like involutions in a group. Indeed, in some (very) interesting cases one can associate an involutive automorphism of the algebra to an idempotent ...
Segev, Yoav
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, 1994 Let R be a commutative, von Neumann regular ring and M n ( R ) {M_n}(R) the ring of n × n n \times n matrices over R ...
Christopher Barnett, Victor Camillo
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Semirings generated by idempotents
We prove that a semiring multiplicatively generated by its idempotents is commutative and Boolean, if every idempotent in the semiring has an orthogonal complement. We prove that a semiring additively generated by its idempotents is commutative, if every
Dolžan, David
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Splitting of homotopy idempotents revisited
We are presenting proofs of fundamental results related to homotopy idempotents, proofs that are sufficiently simple so that even the author can understand them. The first one is that homotopy idempotents in the category of pointed connected CW complexes
Dydak, Jerzy
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Understanding idempotents in diagram semigroups
, 2018 PhD ThesisThe principal concern of this document is to develop and expose methodology for enumerating idempotents in certain semigroups of diagrams in the sense of [76].
Loughlin, Nicholas James
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