Lightlike Hypersurfaces and Canal Hypersurfaces of Lorentzian Surfaces by Jianguo Sun, Donghe Pei

“…The lightlike hypersurfaces in semi-Euclidean space are of special interest in Relativity Theory. In particular, the singularities of these lightlike hypersurfaces provide good models for the study of different horizon types. …”
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Multiplicity of positive solutions to semilinear elliptic boundary value problems by Kenichiro Umezu

“…Our approach is based on super- and sub-solutions, and relies on the topological degree theory on the positive cones of ordered Banach spaces. …”
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The (16,16,2) designs by E. F. Assmus, Jr, Chester J. Salwach

“…Elementary techniques of algebraic coding theory are here used to discuss the three biplanes with k=6. …”
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Dual Spaces of Multiparameter Local Hardy Spaces by Wei Ding, Feng Yu

“…In this paper, we study the duality theory of the multiparameter local Hardy spaces hpℝn1×ℝn2, and we prove that hpℝn1×ℝn2∗=cmopℝn1×ℝn2, where cmopℝn1×ℝn2 are defined by discrete Carleson measure. …”
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Stability Conditions of Second Order Integrodifferential Equations with Variable Delay by Dingheng Pi

“…By using the fixed point theory, we obtain conditions which ensure that the zero solution of this equation is stable under an exponentially weighted metric. …”
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Comparative analysis of thermostressed state of the cylinder and prism by Ju. S. Postolnik, V. I. Timoshpolskij, O. A. Chernyj, D. N. Andrianov

“…At using of method of equivalent sources and theory of thermoelasticity there is carried out the comparative analyses of values of thermal tensions at heating of prismatic slug and cylindrical slug with equivalent radius.…”
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A Fixed Point Approach to the Stability of the Cauchy Additive and Quadratic Type Functional Equation by Sun Sook Jin, Yang-Hi Lee

“…We investigate the stability of the functional equation 2𝑓(𝑥+𝑦)+𝑓(𝑥−𝑦)+𝑓(𝑦−𝑥)−3𝑓(𝑥)−𝑓(−𝑥)−3𝑓(𝑦)−𝑓(−𝑦)=0 by using the fixed point theory in the sense of Cădariu and Radu.…”
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Periodic Solutions of Second-Order Differential Inclusions Systems with -Laplacian by Liang Zhang, Peng Zhang

“…. , , by using nonsmooth critical point theory. Our results generalize and improve some theorems in the literature.…”
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Ab Initio Study of Atropisomers of Derivatives of N-Benzyl-2-phenylpyridinium Ions by Firouzeh Nemati, Hossein Kiani

“…Ab initio calculation at RHF/6-31G* level of theory for geometry optimization of conformers of N-benzyl-2-phenylpyridinium ions are reported. …”
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HISTORICAL AND CULTURAL CONTEXT OF EVOLUTION OF SOCIAL CONTRACT IDEA (FROM ANTIQUITY TO NEW (MODERN) TIME) by O. Belousova

“…., formation and development of the idea (and) theory) of the “social contract”. The causes for evolution of this important conception in sociology are shown in historical retrospective. …”
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Weak Solutions for a p-Laplacian Antiperiodic Boundary Value Problem with Impulsive Effects by Keyu Zhang, Jiafa Xu, Wei Dong

“…By virtue of variational method and critical point theory, we will investigate the existence of weak solutions for a p-Laplacian impulsive differential equation with antiperiodic boundary conditions.…”
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A Class of Generalized Differential Operators with Infinitely Many Discontinuous Points by Yurong Li, Jiong Sun, Siqin Yao

“…We define a class of differential operators T which have infinitely many discontinuous points, and investigate the kernel of T in terms of operator theory. It is shown that the solutions of T have exponential behavior, and the dimension of the kernel is given.…”
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Artificial Intelligence in State Management by S. G. Vasin

“…Based on the analysis of Russian and foreign experience, theory and practice of using a few components of artificial intelligence in public administration proposed a number of recommendations. …”
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Stationary in Distributions of Numerical Solutions for Stochastic Partial Differential Equations with Markovian Switching by Yi Shen, Yan Li

“…Finally, one example is given to illustrate the theory.…”
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Stability of a Nonlinear Fractional Langevin System with Nonsingular Exponential Kernel and Delay Control by Kaihong Zhao

“…Based on the fixed point theory, some sufficient criteria for the existence and uniqueness of solution are established. …”
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p-regular Cauchy completions by Darrell C. Kent, Jennifer Wig

“…This paper gives a further development of p-regular completion theory, including a study of p-regular Reed completions, the role of diagonal axioms, and the relationship between p-regular and p-topological completions.…”
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La grande transformation des politiques agricoles anglaise et française : une sociologie de l’hégémonie économique by Matthieu Ansaloni, Gilles Allaire

“…Combining Regulation theory and political sociology, it sheds light on their singularities by distinguishing three mechanisms: the first relates to national division of intellectual work on agriculture; the second to the production of economic constraint; the third to state action which stabilizes political struggles. …”
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Thermoelasticity without energy dissipation for initially stressed bodies by Jun Wang, Susan Palmer Slattery

“…Thermoelastic equations without energy dissipation are formulated for a body which has previously received a large deformation and is at nonuniform temperature. A linear theory of thermoelasticity without energy dissipation for prestressed bodies is derived and the uniqueness theorem for a class of mixed initial-boundary value problems is established.…”
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Réflexions générales sur la politique de partenariat à l’école by Jean-Jacques Sarfati

“…We want to show the extreme diversity of this policy and the great difference between theory and practice. We also want to think a method for perform this sort of partnership and show the two sorts of view on this question: moral or inspired by a Machiavelli philosophy in a French context of suffering.…”
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New Electronically-Tunable Oscillator Circuit Using Only Two OTAs by Muhammad Taher Abuelma'atti, Muhammad Haroon Khan

“…Experimental results confirming the presented theory are included.…”
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