Search for dissertations about: "Differential equations"

Showing result 1 - 5 of 474 swedish dissertations containing the words Differential equations.

2. 1. Differential Equations with Constraints

   Author : Olivier Verdier; Matematik LTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : We study various differential equations subject to constraints. In the first part we study a partial differential equation, Burgers equation, subject to time-periodicity constraint. The forcing term is time-periodic and may be highly irregular. READ MORE

4. 2. Convergence rates of adaptive algorithms for deterministic and stochastic differential equations

   Author : Kyoung-Sook Moon; KTH; []
   Keywords : adaptive mesh refinement algorithm; computational complexity; a posteriori error estimate; ordinary differential equations; stochastic differential equations;

   Abstract : .... READ MORE

5. 3. Infinite dimensional holomorphy in the ring of formal power series : partial differential operators

   Author : Henrik Petersson; Andrei Khrennikov; Sean Dineen; Växjö universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Infinite dimensional holomorphy; Formal power series; Fourier-Borel transform; Paley-Wiener theorem; Fischer decomposition; Fischer pair; Fock space; Cauchy-Problem; Kergin operator; PDE-preserving; Pseudo-differential operators.; MATHEMATICS; MATEMATIK;

   Abstract : We study holomorphy in the ring of formal power series in an infinite number of variables. Thus we restrict our study to (infinite dimensional) holomorphy on sequence spaces and we show that we obtain a rich theory without requiring any topological structure on the domain space. We make a comprehensive PDO-study for the spaces under consideration. READ MORE

6. 4. Studies in differential-difference equations

   Author : Harald Lang; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : .... READ MORE

7. 5. Structural algorithms and perturbations in differential-algebraic equations

   Author : Henrik Tidefelt; Torkel Glad; Mats Jirstrand; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; differential-algebraic equations; index reduction; singular perturbation; Automatic control; Reglerteknik;

   Abstract : Den kvasilinjära formen av differential-algebraiska ekvationer är både en mycket allmängiltig generalisering av den linjära tidsinvarianta formen, och en form som visar sig lämpa sig väl för indexreduktionsmetoder som vi hoppas ska komma att bli både praktiskt tillämpbara och väl förstådda i framtiden.Kuperingsalgoritmen (engelska: the shuffle algorithm) användes ursprungligen för att bestämma konsistenta initialvillkor för linjära tidsinvarianta differential-algebraiska ekvationer, men har även andra tillämpningar, till exempel det grundläggande problemet numerisk integration. READ MORE