منابع مشابه
Comultiplication and suspension
We prove the conjecture of Berstein, Hilton, and Ganea that an (n I)-connected CW-complex X with dim X < k(n 2) + 3 which has a co-Ak_,-space structure desuspends. Moreover, we show the following dual of a result of Segal: given a cosimplicial space Y, which is special in the sense that the canonical maps Vz’, Yr + k;, are homotopy equivalences and Yl is 2-connected then there is a functorial d...
متن کاملMultiplication and comultiplication of beliefs
Multiplication and comultiplication of beliefs represent a generalisation of multiplication and comultiplication of probabilities as well as of binary logic AND and OR. Our approach follows that of subjective logic, where belief functions are expressed as opinions that are interpreted as being equivalent to beta probability distributions. We compare different types of opinion product and coprod...
متن کاملON COMULTIPLICATION AND R-MULTIPLICATION MODULES
We state several conditions under which comultiplication and weak comultiplication modulesare cyclic and study strong comultiplication modules and comultiplication rings. In particular,we will show that every faithful weak comultiplication module having a maximal submoduleover a reduced ring with a finite indecomposable decomposition is cyclic. Also we show that if M is an strong comultiplicati...
متن کاملOn the Comultiplication in Quantum Affine Algebras
In [8], V.G. Drinfeld gave a new set of generators and relations for the quantum affine algebra Uq(ĝ) (and also for the Yangian). He also gave an isomorphism between the two realizations, but there was no proof in that article. In [1], J. Beck found these new generators inside Uq(ĝ), and proved that they satisfy the relations given by Drinfeld. He also proved that the two realizations were isom...
متن کاملComultiplication Rules for the Double Schur Functions and Cauchy Identities
The double Schur functions form a distinguished basis of the ring Λ(x ||a) which is a multiparameter generalization of the ring of symmetric functions Λ(x). The canonical comultiplication on Λ(x) is extended to Λ(x ||a) in a natural way so that the double power sums symmetric functions are primitive elements. We calculate the dual Littlewood–Richardson coefficients in two different ways thus pr...
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ژورنال
عنوان ژورنال: Topology and its Applications
سال: 1997
ISSN: 0166-8641
DOI: 10.1016/s0166-8641(96)00103-4