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# Course detail

## Basics of Calculus of Variations

Subjet code : FAST-CA58 Faculty of Civil Engineering 2011/2012 Yes prof. RNDr. Josef Diblík, DrSc. Institute of Mathematics and Descriptive Geometry Master's full-time study Czech 5 course-unit credit and examination 1 summer optional

The study programmes with the given course

 Objective of the course – aims of the course unit: The students should be acquainted with the basics of functional analysis needed to understand the principles of the calculus of variation and non-numeric solutions of initial and boundary problems. Objective of the course – learning outcomes and competences: Students will have an overview on advanced methods of mathematical analysis (basic notions of functional analysis, derivatives of a functional, fixed point theorems), methods of calculus of variations and on selected numerical methods for solving of problems for partial differential equations. Prerequisites: Basics of the theory of one- and more-functions. Differentiation and integration of functions. Course contents (annotation): Functional spaces, the notion of a funkcional, first and second derivative of a functional, Euler and Lagrange conditions, strong and weak convergence, classic, minimizing and variational formulation of differential problems (examples in mechanics of building structures), numeric solutions to initial and boundary problems, Ritz and Galerkin method, finite-element method, an overview of further variational methods, space and time discretization of evolution problems. Teaching methods and criteria: n. a. Assesment methods and criteria linked to learning outcomes: Requirements for successful completion of the subject are specified by guarantor’s regulation updated for every academic year. Course curriculum: 1. Linear, metric, normed, and unitary spaces. Fixed-point theorems. 2. Linear operators, the notion of a functional, special functional spaces 3. Differential operators. Initial and boundary problems in differential equations. 4. First derivative of a functional, potentials of some boundary problems. 5. Second derivative of a functional. Lagrange conditions. 6. Convex functionals, strong and weak convergence. 7. Classic, minimizing and variational formulation of differential problems 8. Primary, dual, and mixed formulation - examples in mechanics of building structures 9. Numeric solutions to initial and boundary problems, discretization schemes. 10. Numeric solutions to boundary problems. Ritz and Galerkin method. 11. Finite-element method, comparison with the method of grids. 12. Kačanov method, method of contraction, method of maximal slope. 13. Numeric solution of general evolution problems. Full discretization and semi-discretization. Method of straight lines. Rothe method of time discretization. 14. An overview of further variational methods: method of boundary elements, method of finite volumes, non-grid approaches. Variational inequalities. Specification of controlled education, way of implementation and compensation for absences: Extent and forms are specified by guarantor’s regulation updated for every academic year. Recommended reading: Rektorys K.: Variační metody v inženýrských problémech a v problémech matematické fyziky. Academia 1999Nečas J. - Hlaváček I.: Úvod do matematické teorie pružných a pružně plastických těles. SNTL Praha 1983

Type of course unit:
Lecture: 26 hours, optionally prof. RNDr. Josef Diblík, DrSc. 26 hours, compulsory prof. RNDr. Josef Diblík, DrSc.