Results 31 to 40 of about 2,924,530 (359)

Compressed Representation of Dynamic Binary Relations with Applications [PDF]

open access: greenInformation Systems, 2017
Nieves R. Brisaboa   +3 more
openalex   +3 more sources

THE TASK OF SYNTHESIS OF INDIVIDUAL CURRICULUMS IN THE SPACE OF VIRTUAL LEARNING GROUPS

open access: yesСтатистика и экономика, 2016
The approach of educational planning and organization of educational process is offered to provide students the ability to select and adjust trajectories of learning.
Christina A. Denks   +2 more
doaj   +1 more source

Fixed Point Results for a Selected Class of Multi-Valued Mappings under (θ,)-Contractions with an Application

open access: yesMathematics, 2020
In this article, we introduce a relatively new concept of multi-valued ( θ , R ) -contractions and utilize the same to prove some fixed point results for a special class of multi-valued mappings in metric spaces endowed with an amorphous binary ...
Md Hasanuzzaman   +3 more
doaj   +1 more source

Groups and Algebras of Binary Relations [PDF]

open access: yesThe Bulletin of Symbolic Logic, 2002
AbstractIn 1941, Tarski published an abstract, finitely axiomatized version of the theory of binary relations, called the theory of relation algebras. He asked whether every model of his abstract theory could be represented as a concrete algebra of binary relations.
Givant, Steven, Andreka, Hajnal
openaire   +2 more sources

A novel pessimistic multigranulation roughness by soft relations over dual universe

open access: yesAIMS Mathematics, 2023
A multigranulation rough set over two universes delivers a unique perspective on the combination of multigranulation information. This paper presents the pessimistic multignualtion rough set over dual universes based on soft binary relations.
Jamalud Din   +2 more
doaj   +1 more source

A language hierarchy of binary relations

open access: yesInformation and Computation, 2020
19 pages, 2 figures (Several new examples added)
Tara Brough, Alan J. Cain
openaire   +4 more sources

Groups of binary relations

open access: yesSemigroup Forum, 1970
It was shown in [3] that every finite group is the maximal subgroup of a semigroupBx of all binary relations on some finite set X. This result is extended here to arbitrary groups.
B. M. Schein   +3 more
openaire   +2 more sources

About the fundamental relations defined on the hypergroupoids associated with binary relations

open access: bronzeEuropean journal of combinatorics (Print), 2010
Irina Cristea   +2 more
openalex   +2 more sources

Identities for field extensions generalizing the Ohno-Nakagawa relations [PDF]

open access: yes, 2015
In previous work, Ohno conjectured, and Nakagawa proved, relations between the counting functions of certain cubic fields. These relations may be viewed as complements to the Scholz reflection principle, and Ohno and Nakagawa deduced them as consequences
Cohen   +12 more
core   +5 more sources

Ordinal notions of submodularity [PDF]

open access: yes, 2008
We consider several ordinal formulations of submodularity, defined for arbitrary binary relations on lattices. Two of these formulations are essentially due to Kreps [Kreps, D.M., 1979.
Chambers, Christopher P.   +1 more
core   +2 more sources

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