Motreanu, D.
Overview
Works:  15 works in 79 publications in 2 languages and 1,602 library holdings 

Roles:  Author 
Classifications:  QA316, 515.64 
Publication Timeline
.
Most widely held works by
D Motreanu
Nonsmooth variational problems and their inequalities : comparison principles and applications by
S Carl(
Book
)
20 editions published between 2007 and 2011 in English and held by 189 WorldCat member libraries worldwide
"This monograph focuses primarily on nonsmooth variational problems that arise from boundary value problems with nonsmooth data and/or nonsmooth constraints, such as multivalued elliptic problems, variational inequalities, hemivariational inequalities, and their corresponding evolution problems." "This text is an invaluable reference for researchers and graduate students in mathematics (functional analysis, partial differential equations, elasticity, applications in materials science and mechanics) as well as physicists and engineers."Jacket
20 editions published between 2007 and 2011 in English and held by 189 WorldCat member libraries worldwide
"This monograph focuses primarily on nonsmooth variational problems that arise from boundary value problems with nonsmooth data and/or nonsmooth constraints, such as multivalued elliptic problems, variational inequalities, hemivariational inequalities, and their corresponding evolution problems." "This text is an invaluable reference for researchers and graduate students in mathematics (functional analysis, partial differential equations, elasticity, applications in materials science and mechanics) as well as physicists and engineers."Jacket
Tangency, flow invariance for differential equations, and optimization problems by
D Motreanu(
Book
)
9 editions published in 1999 in English and held by 152 WorldCat member libraries worldwide
9 editions published in 1999 in English and held by 152 WorldCat member libraries worldwide
Handbook of nonconvex analysis and applications(
Book
)
4 editions published in 2010 in English and held by 104 WorldCat member libraries worldwide
4 editions published in 2010 in English and held by 104 WorldCat member libraries worldwide
Minimax theorems and qualitative properties of the solutions of hemivariational inequalities by
D Motreanu(
Book
)
11 editions published between 1999 and 2014 in English and held by 100 WorldCat member libraries worldwide
Boundary value problems which have variational expressions in form of inequal ities can be divided into two main classes. The class of boundary value prob lems (BVPs) leading to variational inequalities and the class of BVPs leading to hemivariational inequalities. The first class is related to convex energy functions and has being studied over the last forty years and the second class is related to nonconvex energy functions and has a shorter research "life" beginning with the works of the second author of the present book in the year 1981. Nevertheless a variety of important results have been produced within the framework of the theory of hemivariational inequalities and their numerical treatment, both in Mathematics and in Applied Sciences, especially in Engineering. It is worth noting that inequality problems, i. e. BVPs leading to variational or to hemivariational inequalities, have within a very short time had a remarkable and precipitate development in both Pure and Applied Mathematics, as well as in Mechanics and the Engineering Sciences, largely because of the possibility of applying and further developing new and efficient mathematical methods in this field, taken generally from convex and/or nonconvex Nonsmooth Analy sis. The evolution of these areas of Mathematics has facilitated the solution of many open questions in Applied Sciences generally, and also allowed the formu lation and the definitive mathematical and numerical study of new classes of interesting problems
11 editions published between 1999 and 2014 in English and held by 100 WorldCat member libraries worldwide
Boundary value problems which have variational expressions in form of inequal ities can be divided into two main classes. The class of boundary value prob lems (BVPs) leading to variational inequalities and the class of BVPs leading to hemivariational inequalities. The first class is related to convex energy functions and has being studied over the last forty years and the second class is related to nonconvex energy functions and has a shorter research "life" beginning with the works of the second author of the present book in the year 1981. Nevertheless a variety of important results have been produced within the framework of the theory of hemivariational inequalities and their numerical treatment, both in Mathematics and in Applied Sciences, especially in Engineering. It is worth noting that inequality problems, i. e. BVPs leading to variational or to hemivariational inequalities, have within a very short time had a remarkable and precipitate development in both Pure and Applied Mathematics, as well as in Mechanics and the Engineering Sciences, largely because of the possibility of applying and further developing new and efficient mathematical methods in this field, taken generally from convex and/or nonconvex Nonsmooth Analy sis. The evolution of these areas of Mathematics has facilitated the solution of many open questions in Applied Sciences generally, and also allowed the formu lation and the definitive mathematical and numerical study of new classes of interesting problems
Variational and nonvariational methods in nonlinear analysis and boundary value problems by
D Motreanu(
Book
)
9 editions published between 2003 and 2011 in English and held by 97 WorldCat member libraries worldwide
The book provides a comprehensive exposition of modern topics in nonlinear analysis with applications to various boundary value problems with discontinuous nonlinearities and nonsmooth constraints. Our framework includes multivalued elliptic problems with discontinuities, variational inequalities, hemivariational inequalities and evolution problems. In addition to the existence of solutions, a major part of the book is devoted to the study of different qualitative properties such as multiplicity, location, extremality, and stability. The treatment relies on variational methods, monotonicity principles, topological arguments and optimization techniques. The book is based on the authors' original results obtained in the last decade. A great deal of the material is published for the first time in this book and is organized in a unifying way. The book is selfcontained. The abstract results are illustrated through various examples and applications
9 editions published between 2003 and 2011 in English and held by 97 WorldCat member libraries worldwide
The book provides a comprehensive exposition of modern topics in nonlinear analysis with applications to various boundary value problems with discontinuous nonlinearities and nonsmooth constraints. Our framework includes multivalued elliptic problems with discontinuities, variational inequalities, hemivariational inequalities and evolution problems. In addition to the existence of solutions, a major part of the book is devoted to the study of different qualitative properties such as multiplicity, location, extremality, and stability. The treatment relies on variational methods, monotonicity principles, topological arguments and optimization techniques. The book is based on the authors' original results obtained in the last decade. A great deal of the material is published for the first time in this book and is organized in a unifying way. The book is selfcontained. The abstract results are illustrated through various examples and applications
Variational and hemivariational inequalities : theory, methods, and applications(
Book
)
1 edition published in 2003 in English and held by 50 WorldCat member libraries worldwide
1 edition published in 2003 in English and held by 50 WorldCat member libraries worldwide
Topological and variational methods with applications to nonlinear boundary value problems by
D Motreanu(
Book
)
10 editions published in 2014 in English and held by 32 WorldCat member libraries worldwide
This book focuses on nonlinear boundary value problems and the aspects of nonlinear analysis which are necessary to their study. The authors first give a comprehensive introduction to the many different classical methods from nonlinear analysis, variational principles, and Morse theory. They then provide a rigorous and detailed treatment of the relevant areas of nonlinear analysis with new applications to nonlinear boundary value problems for both ordinary and partial differential equations. Recent results on the existence and multiplicity of critical points for both smooth and nonsmooth functional, developments on the degree theory of monotone type operators, nonlinear maximum and comparison principles for pLaplacian type operators, and new developments on nonlinear Neumann problems involving nonhomogeneous differential operator appears for the first time in book form. The presentation is systematic, and an extensive bibliography and a remarks section at the end of each chapter highlight the text. This work will serve as an invaluable reference for researchers working in nonlinear analysis and partial differential equations as well as a useful tool for all those interested in the topics presented
10 editions published in 2014 in English and held by 32 WorldCat member libraries worldwide
This book focuses on nonlinear boundary value problems and the aspects of nonlinear analysis which are necessary to their study. The authors first give a comprehensive introduction to the many different classical methods from nonlinear analysis, variational principles, and Morse theory. They then provide a rigorous and detailed treatment of the relevant areas of nonlinear analysis with new applications to nonlinear boundary value problems for both ordinary and partial differential equations. Recent results on the existence and multiplicity of critical points for both smooth and nonsmooth functional, developments on the degree theory of monotone type operators, nonlinear maximum and comparison principles for pLaplacian type operators, and new developments on nonlinear Neumann problems involving nonhomogeneous differential operator appears for the first time in book form. The presentation is systematic, and an extensive bibliography and a remarks section at the end of each chapter highlight the text. This work will serve as an invaluable reference for researchers working in nonlinear analysis and partial differential equations as well as a useful tool for all those interested in the topics presented
Variational amd hemivariational inequalities : theory, methods and applications. 2, Unilateral problems by
D Goeleven(
Book
)
8 editions published in 2003 in English and held by 13 WorldCat member libraries worldwide
This book includes a selfcontained theory of inequality problems and their applications to unilateral mechanics. Fundamental theoretical results and related methods of analysis are discussed on various examples and applications in mechanics. The work can be seen as a book of applied nonlinear analysis entirely devoted to the study of inequality problems, i.e. variational inequalities and hemivariational inequalities in mathematical models and their corresponding applications to unilateral mechanics. It contains a systematic investigation of the interplay between theoretical results and concrete problems in mechanics. It is the first textbook including a comprehensive and systematic study of both elliptic, parabolic and hyperbolic inequality models, dynamical unilateral systems and unilateral eigenvalues problems. The book is selfcontained and it offers, for the first time, the possibility to learn about inequality models and to acquire the essence of the theory in a relatively short time. Audience: The book is suitable for researchers, and for doctoral and postdoctoral courses
8 editions published in 2003 in English and held by 13 WorldCat member libraries worldwide
This book includes a selfcontained theory of inequality problems and their applications to unilateral mechanics. Fundamental theoretical results and related methods of analysis are discussed on various examples and applications in mechanics. The work can be seen as a book of applied nonlinear analysis entirely devoted to the study of inequality problems, i.e. variational inequalities and hemivariational inequalities in mathematical models and their corresponding applications to unilateral mechanics. It contains a systematic investigation of the interplay between theoretical results and concrete problems in mechanics. It is the first textbook including a comprehensive and systematic study of both elliptic, parabolic and hyperbolic inequality models, dynamical unilateral systems and unilateral eigenvalues problems. The book is selfcontained and it offers, for the first time, the possibility to learn about inequality models and to acquire the essence of the theory in a relatively short time. Audience: The book is suitable for researchers, and for doctoral and postdoctoral courses
Analiza variationala cu aplicatii in probleme eliptice by
D Motreanu(
Book
)
1 edition published in 1996 in Romanian and held by 2 WorldCat member libraries worldwide
1 edition published in 1996 in Romanian and held by 2 WorldCat member libraries worldwide
Quasi tangent vectors in flowinvariance and optimization problems on banach manifolds by
D Motreanu(
Book
)
2 editions published between 1980 and 1981 in English and held by 2 WorldCat member libraries worldwide
2 editions published between 1980 and 1981 in English and held by 2 WorldCat member libraries worldwide
Existence results for inequality problems with lack of convexity by
D Motreanu(
)
1 edition published in 2000 in English and held by 1 WorldCat member library worldwide
We establish several existence results of HartmanStampacchia type for hemivariational inequalities on bounded and convex sets in a real reflexive Banach space. We also study the cases of coercive and noncoercive variationalhemivariational inequalities. Two applications on nonmonotone laws in networks and nonconvex semipermeability illustrate the abstract results
1 edition published in 2000 in English and held by 1 WorldCat member library worldwide
We establish several existence results of HartmanStampacchia type for hemivariational inequalities on bounded and convex sets in a real reflexive Banach space. We also study the cases of coercive and noncoercive variationalhemivariational inequalities. Two applications on nonmonotone laws in networks and nonconvex semipermeability illustrate the abstract results
A unified treatment using critical point methods of the existence of multiple solutions for superlinear and sublinear Neumann
problems by
D Motreanu(
)
1 edition published in 2011 in English and held by 1 WorldCat member library worldwide
In this paper we present a framework which permits the unified treatment of the existence of multiple solutions for superlinear and sublinear Neumann problems. Using critical point theory, truncation techniques, the method of upperlower solutions, Morse theory and the invariance properties of the negative gradient flow, we show that the problem can have seven nontrivial smooth solutions, four of which have constant sign and three are nodal
1 edition published in 2011 in English and held by 1 WorldCat member library worldwide
In this paper we present a framework which permits the unified treatment of the existence of multiple solutions for superlinear and sublinear Neumann problems. Using critical point theory, truncation techniques, the method of upperlower solutions, Morse theory and the invariance properties of the negative gradient flow, we show that the problem can have seven nontrivial smooth solutions, four of which have constant sign and three are nodal
Eigenvalue problems for degenerate nonlinear elliptic equations in anisotropic media by
D Motreanu(
)
1 edition published in 2005 in English and held by 1 WorldCat member library worldwide
We study nonlinear eigenvalue problems of the form ${\rm div}(a(x) \nabla u) = g(\lambda,x,u)$ in ${\Bbb R}^N$, where $a(x)$ is a degenerate nonnegative weight. We establish the existence of solutions and we obtain information on the multiplicity and location of solutions. Our approach is based on critical point theory in weighted Sobolev spaces combined with a CaffarelliKohnNirenberg type inequality. A specific minimax method is developed without making use of the PalaisSmale condition
1 edition published in 2005 in English and held by 1 WorldCat member library worldwide
We study nonlinear eigenvalue problems of the form ${\rm div}(a(x) \nabla u) = g(\lambda,x,u)$ in ${\Bbb R}^N$, where $a(x)$ is a degenerate nonnegative weight. We establish the existence of solutions and we obtain information on the multiplicity and location of solutions. Our approach is based on critical point theory in weighted Sobolev spaces combined with a CaffarelliKohnNirenberg type inequality. A specific minimax method is developed without making use of the PalaisSmale condition
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Associated Subjects
Boundary value problems Calculus of variations Differential equations Differential equations, Nonlinear Differential equations, Partial Engineering mathematics Flows (Differentiable dynamical systems) Functional analysis Functions, Special Hemivariational inequalities Mathematical optimization Mathematics Maxima and minima Mechanics Mechanics, Analytic Nonlinear boundary value problems Nonlinear functional analysis Nonlinear operators Nonlinear theories Nonsmooth optimization Operator theory Topological groups Variational inequalities (Mathematics)