Results 11 to 20 of about 4,910,326 (80)

Exponentially Fitted Two‐Derivative Runge‐Kutta Methods for Simulation of Oscillatory Genetic Regulatory Systems [PDF]

open access: yesComputational and Mathematical Methods in Medicine, Volume 2015, Issue 1, 2015., 2015
Oscillation is one of the most important phenomena in the chemical reaction systems in living cells. The general purpose simulation algorithms fail to take into account this special character and produce unsatisfying results. In order to enhance the accuracy of the integrator, the second‐order derivative is incorporated in the scheme.
Zhaoxia Chen   +4 more
wiley   +2 more sources

Beyond Regular Semigroups [PDF]

open access: yes, 2012
The topic of this thesis is the class of weakly U-abundant semigroups. This class is very wide, containing inverse, orthodox, regular, ample, adequate, quasi-adequate, concordant, abundant, restriction, Ehresmann and weakly abundant semigroups.
Wang, Yanhui
core   +6 more sources

Maximal subgroups of free idempotent-generated semigroups over the full transformation monoid [PDF]

open access: yes, 2011
Let Tn be the full transformation semigroup of all mappings from the set {1, . . . , n} to itself under composition. Let E = E(Tn) denote the set of idempotents of Tn and let e ∈ E be an arbitrary idempotent satisfying |im (e)| = r ≤ n − 2. We prove that
Ruskuc, N.   +3 more
core   +1 more source

Every group is a maximal subgroup of the free idempotent generated semigroup over a band [PDF]

open access: yes, 2013
Given an arbitrary group G we construct a semigroup of idempotents (band) BG with the property that the free idempotent generated semigroup over BG has a maximal subgroup isomorphic to G. If G is finitely presented then BG is finite. This answers several
Ruskuc, Nik   +3 more
core   +1 more source

On maximal subgroups of free idempotent generated semigroups [PDF]

open access: yes, 2011
We prove the following results: (1) Every group is a maximal subgroup of some free idempotent generated semigroup. (2) Every finitely presented group is a maximal subgroup of some free idempotent generated semigroup arising from a finite semigroup.
Ruskuc, N.   +5 more
core   +1 more source

On the biordered set of rings

open access: yesMalaya Journal of Matematik, 2016
In [4] K.S.S. Nambooripad introduced biordered sets as a partial algebra $\left(E, \omega^r, \omega^l\right)$ where $\omega^r$ and $\omega^l$ are two quasiorders on the set $E$ satisfying biorder axioms; to study the structure of a regular semigroup.
null P. G. Romeo, null R. Akhila
openaire   +1 more source

Biordered sets of semigroups [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1984
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Efficacy of Non-Linear Approach in the Study of Ozone Layer Depletion [PDF]

open access: yes, 2021
The stratosphere is one of the constituents of thermal structure of the atmosphere. The maximum concentration of ozone is found at the stratospheric region where it is interacted by many species including chemical and physical processes.
M. Ayub Khan Yousuf Zai   +3 more
core   +1 more source

Free idempotent generated semigroups over bands and biordered sets with trivial products [PDF]

open access: yesInternational Journal of Algebra and Computation, 2016
For any biordered set of idempotents [Formula: see text] there is an initial object [Formula: see text], the free idempotent generated semigroup over[Formula: see text], in the category of semigroups generated by a set of idempotents biorder-isomorphic to [Formula: see text].
Yang, Dandan   +1 more
openaire   +2 more sources

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

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