Columbia subject headings:
Boundary value problems--Numerical solutions.
Differential equations, Elliptic.
Sobolev spaces.
Harvard subject headings:
Boundary value problems--Numerical solutions.
Differential equations, Elliptic--Numerical solutions.
Finite element method.
Sobolev spaces.
Princeton subject headings:
Boundary value problems--Numerical solutions.
Differential equations, Elliptic--Numerical solutions.
Finite element method.
Sobolev spaces.