Results 21 to 30 of about 733,652 (73)

The Order of Normal Form Generalized Hypersubstitutions of Type τ = (2)

open access: yesKyungpook mathematical journal, 2014
In 2000, K. Denecke and K. Mahdavi showed that there are many idempotent elements in HypNφ(V ) the set of normal form hypersubstitutions of type = (2) which are not idempotent elements in Hyp(2) the set of all hypersubstitutions of type = (2). They considered in which varieties, idempotent elements of Hyp(2) are idempotent elements of HypNφ(V ).
Sivaree Sudsanit, Sorasak Leeratanavalee
openaire   +2 more sources

Complexity of terms, composition, and hypersubstitution

open access: yes, 2003
We consider four useful measures of the complexity of a term: the maximum depth (usually called the depth), the minimum depth, the variable count, and the operation count.
Klaus Denecke, Shelly L. Wismath
core   +1 more source

On the generalized Jacobi equation. [PDF]

open access: yes, 2008
The standard text-book Jacobi equation (equation of geodesic deviation) arises by linearizing the geodesic equation around some chosen geodesic, where the linearization is done with respect to the coordinates and the velocities.
Perlick, Volker
core   +5 more sources

Idempotence and regularity of generlized relational hypersubstitutions for algebraic sytems [PDF]

open access: yes
The concept of a generalized relational hypersubstitution for algebraic systems of type $(\tau,\tau')$ is an extension of the concept of a generalized hypersubstitution for universal algebra of type $\tau$.
Kunama, Pornpimol   +3 more
core   +1 more source

Application of a Modified Generalized Regression Neural Networks Algorithm in Economics and Finance [PDF]

open access: yes, 2011
In this paper we propose an alternative and modified Generalized Regression Neural Networks Autoregressive model (GRNN-AR) in S&P 500 and FTSE 100 index returns, as also in Gross domestic product growth rate of Italy, USA and UK. We compare the forecasts
Giovanis, Eleftherios
core  

The histopathological spectrum of acute generalized exanthematous pustulosis (AGEP) and its differentiation from generalized pustular psoriasis [PDF]

open access: yes, 2010
Background: Acute generalized exanthematous pustulosis (AGEP) represents a severe, acute, pustular skin reaction that is most often induced by drugs. AGEP can be difficult to differentiate from generalized pustular psoriasis (GPP) both clinically and ...
Fidler, Vaclav   +11 more
core   +2 more sources

Orders of Generalized Hypersubstitutions of Type τ = (3)

open access: yes, 2020
The concept of generalized hypersubstitutions was introduced by S. Leeratanavalee and K. Denecke in 2000. We used it as the tool to study strong hyperidentities and strongly solid varieties.
Sivaree Sudsanit, Sorasak Leeratanavalee
core  

Sheaves of nonlinear generalized functions and manifold-valued distributions

open access: yes, 2009
This paper is part of an ongoing program to develop a theory of generalized differential geometry. We consider the space G[X,Y] of Colombeau generalized functions defined on a manifold X and taking values in a manifold Y. This space is essential in order
Steinbauer, Roland   +5 more
core   +1 more source

IDEMPOTENT ELEMENTS OF PRE-GENERALIZED HYPERSUBSTITUTIONS OF TYPE (m, n)

open access: yes, 2016
A generalized hypersubstitution of type τ = (m, n) is a mapping σ which maps the m-ary operation symbol f and n-ary operation symbol g to the term σ(f) and σ(g), and may not preserved arities.
Jampachon, Prakit   +1 more
core  

Differentiable generalized inverses

open access: yes, 1968
Necessary and sufficient conditions are given for a differentiable matrix to have a differentiable generalized inverse. It is shown that when these conditions are met there exist, for several classes of generalized inverses, a differentiable generalized ...
Hearon, John Z.; Evans, John W.
core   +1 more source

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