Results 11 to 20 of about 7,612,569 (200)

An Equivalent Form of Levy's Axiom Schema [PDF]

open access: yesProceedings of the American Mathematical Society, 1970
A generalized notion of ordinal inaccessibility is defined. A characterization of this notion in terms of normal ordinal functions yields as a consequence that a schema analogous to a form of Tarski’s Axiom of Inaccessible Cardinals is equivalent to Lévy’s axiom schema under the axiom of choice.
Murray Jorgensen
openaire   +2 more sources

A General form of the ‘Land Equivalent Ratio’

open access: yesExperimental Agriculture, 1984
SUMMARYThe Land Equivalent Ratio (LER) concept is presented and interpreted. Several different intercropping systems are considered and the need for methods to evaluate them is discussed. A general form of the LER is proposed for the evaluation, in particular, of a system that combines two intercrops having different yield proportions.
Riley, J.
openaire   +2 more sources

Local and non-local normalised equivalent strain functionals for cyclic fatigue [PDF]

open access: yes, 2004
The concept of Cyclic Normalised Equivalent Strain Functionals (CNESnFs) suitable for lowcyclic fatigue is developed in this paper. It reduces any fatigue strength and durability model to a unique form what facilitates the models comparison ...
Mikhailov, SE, Namestnikova, IV
core   +6 more sources

An Equivalent Linear Programming Form of General Linear Fractional Programming: A Duality Approach

open access: yesMathematics, 2021
Linear fractional programming has been an important planning tool for the past four decades. The main contribution of this study is to show, under some assumptions, for a linear programming problem, that there are two different dual problems (one linear ...
Mehdi Toloo
doaj   +1 more source

Isomorphism, form equivalence and sequence equivalence of PD0L forms

open access: yesTheoretical Computer Science, 1978
AbstractIt is shown that if two PD0L forms F1 and F2 are form equivalent, i.e., generate the same family of languages, then the PD0L sequences E(F1) and E(F2) are isomorphic, provided one of the sequences contains a word of length greater than one. This result leads to a simple algorithm of deciding the form equivalence of two PD0L forms F1 and F2 ...
Karel Culík II   +4 more
openaire   +2 more sources

On a more accurate Hardy-Mulholland-type inequality

open access: yesJournal of Inequalities and Applications, 2016
By using weight coefficients, technique of real analysis, and Hermite-Hadamard’s inequality, we give a more accurate Hardy-Mulholland-type inequality with multiparameters and a best possible constant factor related to the beta function.
Bicheng Yang, Qiang Chen
doaj   +1 more source

The Fundamental Lepage Form in Two Independent Variables: A Generalization Using Order-Reducibility

open access: yesMathematics, 2022
A second-order generalization of the fundamental Lepage form of geometric calculus of variations over fibered manifolds with 2-dimensional base is described by means of insisting on (i) an equivalence relation “Lepage differential 2-form is closed if and
Zbyněk Urban, Jana Volná
doaj   +1 more source

Forms Equivalent to Curvatures

open access: yesRevista Matemática Iberoamericana, 1986
The 2-forms, \Omega and \Omega ' on a manifold M with values in vector bundles
Porta, Horacio, Recht, Lázaro
openaire   +3 more sources

On Hardy-type integral inequalities with the gamma function

open access: yesJournal of Inequalities and Applications, 2017
By means of real analysis and weight functions, we obtain a few equivalent conditions of two kinds of Hardy-type integral inequalities with the non-homogeneous kernel and parameters. The constant factors related to the gamma function are proved to be the
Jianquan Liao, Bicheng Yang
doaj   +1 more source

Comparison between SuperDARN flow vectors and equivalent ionospheric currents from ground magnetometer arrays [PDF]

open access: yes, 2012
Equivalent ionospheric currents obtained with the spherical elementary current systems (SECS) method and derived from nearly 100 ground magnetometers spread over North America and Greenland are compared with ionospheric flow vectors measured by the ...
Angelopoulos, V.   +6 more
core   +5 more sources

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