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Functional Analysis, Sobolev Spaces and Partial Differential Equations

Haim Brezis
TLDR
In this article, the theory of conjugate convex functions is introduced, and the Hahn-Banach Theorem and the closed graph theorem are discussed, as well as the variations of boundary value problems in one dimension.
Abstract
Preface.- 1. The Hahn-Banach Theorems. Introduction to the Theory of Conjugate Convex Functions.- 2. The Uniform Boundedness Principle and the Closed Graph Theorem. Unbounded Operators. Adjoint. Characterization of Surjective Operators.- 3. Weak Topologies. Reflexive Spaces. Separable Spaces. Uniform Convexity.- 4. L^p Spaces.- 5. Hilbert Spaces.- 6. Compact Operators. Spectral Decomposition of Self-Adjoint Compact Operators.- 7. The Hille-Yosida Theorem.- 8. Sobolev Spaces and the Variational Formulation of Boundary Value Problems in One Dimension.- 9. Sobolev Spaces and the Variational Formulation of Elliptic Boundary Value Problems in N Dimensions.- 10. Evolution Problems: The Heat Equation and the Wave Equation.- 11. Some Complements.- Problems.- Solutions of Some Exercises and Problems.- Bibliography.- Index.

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Parabolic equations with dynamic boundary conditions and drift terms.

TL;DR: In this article, the authors studied the wellposedness and regularity of a linear heat equation with dynamic boundary conditions using sesquilinear forms and the Galerkin approximation and the extension semigroup to a negative Sobolev space.
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Ergodicity of an SPDE Associated with a Many-Server Queue

TL;DR: In this article, the authors considered the GI/GI/N queueing network, where a stream of jobs with independent and identically distributed service times arrive according to a renewal process to a common queue served by identical servers in a First-Come-First-Serve manner.
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Integral Invariance and Non-linearity Reduction for Proliferating Vorticity Scales in Fluid Dynamics

F. Lam
TL;DR: In this paper, it was proved that the sum of the three vorticity components of the Navier-Stokes equations is a time-invariant in fluid motion.
Journal ArticleDOI

Combined effects of singular and exponential nonlinearities in fractional Kirchhoff problems

TL;DR: In this article , the existence of weak solutions for the degenerate Kirchhoff problem with singular and exponential nonlinearities was established, and the existence proofs rely on the Nehari manifold techniques.
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Minimal time for the approximate bilinear control of Schrödinger equations

TL;DR: In this article, it was shown that approximate controllability does not hold in arbitrarily small time, no matter what the initial state is, and that the minimal time can in fact be arbitrarily large.
References
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Book

Linear and Quasilinear Equations of Parabolic Type

TL;DR: In this article, the authors considered a hyperbolic parabolic singular perturbation problem for a quasilinear equation of kirchhoff type and obtained parameter dependent time decay estimates of the difference between the solutions of the solution of a quasi-linear parabolic equation and the corresponding linear parabolic equations.
Book

Non-homogeneous boundary value problems and applications

TL;DR: In this paper, the authors consider the problem of finding solutions to elliptic boundary value problems in Spaces of Analytic Functions and of Class Mk Generalizations in the case of distributions and Ultra-Distributions.
Book

Introduction to Fourier Analysis on Euclidean Spaces.

TL;DR: In this paper, the authors present a unified treatment of basic topics that arise in Fourier analysis, and illustrate the role played by the structure of Euclidean spaces, particularly the action of translations, dilatations, and rotations.
Book

Theory of function spaces

Hans Triebel
TL;DR: In this article, the authors measure smoothness using Atoms and Pointwise Multipliers, Wavelets, Spaces on Lipschitz Domains, Wavelet and Sampling Numbers.