Results 31 to 40 of about 3,631,571 (293)

The identities of the free product of a pair of two-element monoids [PDF]

, 2019
Up to isomorphism, there exist two non-isomorphic two-element monoids. We show that the identities of the free product of every pair of such monoids admit no finite basis.Comment: 5 ...
Volkov, Mikhail
core   +1 more source

Sets of primitive elements in a free group

Journal of Algebra, 2012
Let \(F_n\) be the free group on \(n\) generators and \(X=\{x_1,\dots,x_{n}\}\) a standard basis for \(F_n\). A set \(U=\{u_1,u_2,\dots,u_m\}\), \(m\leq n\), is called a primitive set in \(F_n\) if it can be extended to a basis of \(F_n\). In this paper the authors study primitive sets from three classical viewpoints. 1.
Clifford, A., Goldstein, R.Z.
openaire   +1 more source

Two-Dimensional Tunable Reactance Element Free from Electromagnetic Coupling

Condensed Matter
A capacitor modeled as a parallel combination of a resistance (R) and a capacitance (C) exhibits three distinct operating regimes when both parameters depend on the applied voltage (V): a positive-capacitance regime (dR/R>dV/V), an Ohmic regime (dR/R=dV ...
Yong Sun, Shigeru Kanemitsu
doaj   +1 more source

Most Probably Intersecting Families of Subsets [PDF]

, 2012
Let F be a family of subsets of an n-element set. It is called intersecting if every pair of its members has a non-disjoint intersection. It is well known that an intersecting family satisfies the inequality vertical bar F vertical bar
Katona, Gyula, Katona, Gyula (Ifj.), Katona, Z.   +2 more
core   +1 more source

Study on the Trajectory of Free-End Fiber in Jet Vortex Spinning Based on the Elastic Thin-Rod Finite Element Model of Flexible Fiber

AUTEX Research Journal, 2020
During the air flow twisting process of jet vortex spinning, the moving characteristics of flexible free-end fiber are complex. In this paper, the finite element model of the fiber is established based on elastic thin rod element.
Han Chenchen, Gao Weidong, Chen Lifen
doaj   +1 more source

Free Vibration Analysis of a Functionally Graded Plate by Finite Element Method

Ain Shams Engineering Journal, 2023
A new category of materials (composite materials) is in full development, both in terms of their manufacture and calculation, in static and dynamic regime.
Silvia Marzavan, Vasile Nastasescu
doaj   +1 more source

A time dependent Stokes interface problem: well-posedness and space-time finite element discretization [PDF]

, 2018
In this paper a time dependent Stokes problem that is motivated by a standard sharp interface model for the fluid dynamics of two-phase flows is studied.
Reusken, Arnold, Voulis, Igor
core   +2 more sources

Total Lagrangian Finite Element Formulation of the Flory-Rehner Free Energy Function

Revista Facultad de Ingeniería Universidad de Antioquia, 2014
The total Lagrangian finite element implementation of the Flory-Rehner free-energy function in the framework of a hyperelastic material model is addressed. It is explicitly given all the equations required to implement this material model in an implicit
Mario J. Juha
doaj   +1 more source

On Certain Elements of Free Groups

Journal of Algebra, 1998
This paper deals with certain elements of a free group \(F_m\), of rank \(m\), on which the way an endomorphism acts determines the endomorphism as a monomorphism or automorphism and the like. More precisely an element \(w\in F_m\) was defined by Shpilrain to be a test word if for any endomorphism \(\varphi\colon F_m\to F_m\) the equality \(\varphi(w ...
openaire   +2 more sources

Cloud-free resolution element statistics program [PDF]

, 1971
Computer program computes number of cloud-free elements in field-of-view and percentage of total field-of-view occupied by clouds.
Liley, B., Martin, C. D.
core   +1 more source