Results 1 to 10 of about 2,333 (139)

Sparse data embedding and prediction by tropical matrix factorization [PDF]

open access: yesBMC Bioinformatics, 2021
Background Matrix factorization methods are linear models, with limited capability to model complex relations. In our work, we use tropical semiring to introduce non-linearity into matrix factorization models.
Amra Omanović   +3 more
doaj   +2 more sources

On a Matrix over NC and Multiset NC Semigroups

open access: yesJournal of Mathematics, 2022
In this paper, we define a matrix over neutrosophic components (NCs), which was built using the four different intervals 0,1,0,1,0,1, and 0,1. This definition was made clear by introducing some examples.
Mohammed A. Saleem   +2 more
doaj   +2 more sources

Amitsur's theorem, semicentral idempotents, and additively idempotent semirings

open access: yesOpen Mathematics
The article explores research findings akin to Amitsur’s theorem, asserting that any derivation within a matrix ring can be expressed as the sum of an inner derivation and a hereditary derivation.
Rachev Martin, Trendafilov Ivan
doaj   +2 more sources

Public-Key Cryptography Based on Tropical Circular Matrices

open access: yesApplied Sciences, 2022
Some public-key cryptosystems based on the tropical semiring have been proposed in recent years because of their increased efficiency, since the multiplication is actually an ordinary addition of numbers and there is no ordinary multiplication of numbers
Huawei Huang, Chunhua Li, Lunzhi Deng
doaj   +1 more source

Algebraic Solution to Constrained Bi-Criteria Decision Problem of Rating Alternatives through Pairwise Comparisons

open access: yesMathematics, 2021
We consider a decision-making problem to evaluate absolute ratings of alternatives from the results of their pairwise comparisons according to two criteria, subject to constraints on the ratings.
Nikolai Krivulin
doaj   +1 more source

Linear Maps that Preserve Any Two Term Ranks on Matrix Spaces over Anti-Negative Semirings

open access: yesMathematics, 2020
There are many characterizations of linear operators from various matrix spaces into themselves which preserve term rank. In this research, we characterize the linear maps which preserve any two term ranks between different matrix spaces over anti ...
Kyung Tae Kang   +2 more
doaj   +1 more source

Centers, cocenters and simple quantum groups [PDF]

open access: yes, 2013
We define the notion of a (linearly reductive) center for a linearly reductive quantum group, and show that the quotient of a such a quantum group by its center is simple whenever its fusion semiring is free in the sense of Banica and Vergnioux.
Chirvasitu, Alexandru
core   +1 more source

On Decompositions of Matrices over Distributive Lattices

open access: yesJournal of Applied Mathematics, 2014
Let L be a distributive lattice and Mn,q (L)(Mn(L), resp.) the semigroup (semiring, resp.) of n × q (n × n, resp.) matrices over L. In this paper, we show that if there is a subdirect embedding from distributive lattice L to the direct product ∏i=1m‍Li ...
Yizhi Chen, Xianzhong Zhao
doaj   +1 more source

Public Key Cryptography based on Semigroup Actions [PDF]

open access: yes, 2007
A generalization of the original Diffie-Hellman key exchange in $(\Z/p\Z)^*$ found a new depth when Miller and Koblitz suggested that such a protocol could be used with the group over an elliptic curve.
Maze, G., Monico, C., Rosenthal, J.
core   +1 more source

Completely positive matrices over Boolean algebras and their CP-rank

open access: yesSpecial Matrices, 2015
Drew, Johnson and Loewy conjectured that for n ≥ 4, the CP-rank of every n × n completely positive real matrix is at most [n2/4]. In this paper, we prove this conjecture for n × n completely positive matrices over Boolean algebras (finite or infinite ...
Mohindru Preeti
doaj   +1 more source

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