Results 21 to 30 of about 1,243,990 (68)

Biordered Sets of Regular Rings

open access: yes, 2020
The set of idempotents of a regular semigroup is given an abstract characterization as a regular biordered set in [2], and in [4] it is shown how a biordered set can be associated with a complemented modular lattice. Von Neumann has shown earlier that any complemented modular lattice of order greater than 3 can be realized as the lattice of principal ...
Alexander, James, Krishnan, E.
openaire   +2 more sources

Generalized and Customizable Sets in R [PDF]

open access: yes, 2009
We present data structures and algorithms for sets and some generalizations thereof (fuzzy sets, multisets, and fuzzy multisets) available for R through the sets package. Fuzzy (multi-)sets are based on dynamically bound fuzzy logic families.
Kurt Hornik   +3 more
core   +1 more source

Biordered sets of lattices and homogeneous basis

open access: yes, 2020
10 pages zero ...
Romeo, P. G., R, Akhila.
openaire   +2 more sources

Neutrosophic Sets and Systems [PDF]

open access: yes, 2013
Neutrosophic Sets and Systems has been created for publications on advanced studies in neutrosophy, neutrosophic set, neutrosophic logic, neutrosophic probability, neutrosophic statistics that started in 1995 and their applications in any field, such as ...
Smarandache, Florentin (Editor-in-Chief)
core   +1 more source

Visualizing Sets with Linear Diagrams [PDF]

open access: yes, 2015
This paper presents the first design principles that optimize the visualization of sets using linear diagrams. These principles are justified through empirical studies that evaluate the impact of graphical features on task performance.
Rodgers, Peter   +5 more
core   +2 more sources

The structure of causal sets [PDF]

open access: yes, 2011
More often than not, recently popular structuralist interpretations of physical theories leave the central concept of a structure insufficiently precisified.
Christian Wüthrich, Wuthrich, Christian
core   +1 more source

Correlation of fuzzy sets

open access: yes, 2011
When we deal with crisp data, it is very common to find the correlation between variables. Here, we propose a method to calculate the correlation coefficient for fuzzy data, but rather than defining the correlation on the intuitionistic fuzzy sets like ...
林丕靜   +1 more
core   +1 more source

On extremal sets without coprimes [PDF]

open access: yes, 1994
Ahlswede R, Khachatrian LH. On extremal sets without coprimes. Acta Arithmetica.
Levon Khachatrian   +4 more
core   +2 more sources

Beyond sum-free sets in the natural numbers [PDF]

open access: yes, 2014
For an interval [1,N]⊆N, sets S⊆[1,N] with the property that |{(x,y)∈S2:x+y∈S}|=0, known as sum-free sets, have attracted considerable attention. In this paper, we generalize this notion by considering r(S)=|{(x,y)∈S2:x+y∈S}|, and analyze its behaviour ...
Huczynska, Sophie
core   +2 more sources

Positive-measure self-similar sets without interior [PDF]

open access: yes, 2006
We recall the problem posed by Peres and Solomyak in Problems on self-similar and self-affine sets; an update. Progr. Prob. 46 (2000), 95–106: can one find examples of self-similar sets with positive Lebesgue measure, but with no interior?
Solomyak, B   +9 more
core   +1 more source

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