The theory and numerical analysis of differential-algebraic equations are discussed, in particular:

• application fields (electrical circuits and multibody mechanical systems)
• relation with singularly perturbed problems
• solution theory and index concepts
• normal form for linear DAEs
• numerical aspects

Mathematical modelling, numerical methods, and software for the following topics:

• elastic bodies
• special cases of beams and plane strain/stress state
• finite element space discretisation
• specific time integration schemes

The following topics will be covered:

• spline functions and spline spaces
• B-splines
• Bézier splines (Bézier polynomials, de Casteljau's algorithm, Bézier curves, Bézier polynomials over triangles, tensor product Bézier surfaces)
• B-spline smoothing (de Boor's algorithm)

Most problems in science, technology, and engineering can be modeled by a set of differential equations. In general, these equations are too complex to be solved analytically. This course provides the necessary tools and methods to treat initial value problems numerically.

The following topics will be covered:

• explicit and implicit one-step methods (Runge-Kutta methods)
• error estimation and step size control
• multistep methods (Adams and BDF methods)
• consistency, stability, and convergence
• methods for stiff problems

The theory and numerical analysis of differential-algebraic equations are discussed, in particular:

• application fields (electrical circuits and multibody mechanical systems)
• relation with singularly perturbed problems
• solution theory and index concepts
• normal form for linear DAEs
• numerical aspects

Eine Vorstellung des Proseminars kann unter dem folgenden Link aufgerufen werden.

To describe real-world processes, one often makes use of partial differential equations, which, in general, cannot be solved analytically. In this course, we will discuss and study the mathematical techniques required for solving such equations numerically. The focus lies on the discretization of boundary value problems for elliptic differential equations with finite difference or finite element methods. At the end of the course, these ideas will be applied to parabolic differential equations.

The following topics will be covered:

• approximation methods for elliptic problems
• theory of weak solutions
• consistency, stability, and convergence
• approximation methods for parabolic problems

Mathematical modelling, numerical methods, and software for the following topics:

• elastic bodies
• special cases of beams and plane strain/stress state
• finite element space discretisation
• specific time integration schemes

In dieser Lehrveranstaltung werden die grundlegenden Methoden und Algorithmen zur numerischen Lösung von Fragestellungen aus der Linearen Algebra und der Analysis behandelt. Zu den zentralen Themen der Veranstaltung gehören:

• Fehleranalyse: Kondition eines Problems, Stabilität von Algorithmen
• Numerische Verfahren für lineare Gleichungssysteme
• Lineare Ausgleichsprobleme
• Eigenwertprobleme
• Approximationstheorie: Interpolation durch Polynom- oder Spline-Funktionen
• Numerische Integration: Interpolations- und Gaußquadratur
• Numerische Verfahren für nichtlineare Gleichungssysteme