|LECTURE:||MWF 10:00-10:50||STAG 162||CRN 37663|
|Instructor:||R.E. Showalter||Kidder firstname.lastname@example.org|
The existence of solutions to boundary-value problems for elliptic partial differential equations or systems will be posed and solved in Hilbert spaces by variational methods. These include the minimization of convex functions, saddle points and Lagrange multipliers. Examples will be developed for diffusion (porous media), fluid flow (Stokes), and solid mechanics (elasticity). Corresponding evolution equations or systems will be resolved by the semigroup theory for monotone operators. The notions of weak derivatives, Sobolev spaces, boundary trace and topics from linear analysis will be developed as needed.
Grade will be determined by assigned problem sets.
1. Lax-Milgram theorem; Poisson equation. (pp. 1-5 in CO-BVP.pdf)(01/07/2019)
2. Abstract Mixed formulation
3. Closed Range Theorem
4. Neumann problem as constrained minimum. (pp. 9-11 in CO-BVP.pdf)(01/14)
5. Dirichlet problem as constrained minimum.
6. Dirichlet-Neumann problem: 3 formulations. (pp. 12-13 in CO-BVP.pdf)
4. MLK Holiday (01/21)