Mathematics
Boundary conditions
12%
Boundary Element Method
14%
Boundary Integral
30%
Closed curve
14%
Completeness
11%
Continuous Spectrum
7%
Curve
8%
Differential Expression
8%
Differential operator
16%
Dirac Operator
100%
Dirichlet Laplacian
26%
Eigenvalue
27%
Eigenvalue Problem
11%
Electrostatics
38%
Elliptic Operator
12%
Essential Spectrum
7%
Extension Theory
18%
Exterior Domain
7%
Family
8%
Formulation
8%
Hypersurface
17%
Integral Operator
18%
Interaction
60%
Interface Conditions
8%
Landau Levels
13%
Limiting Absorption Principle
19%
Measurable function
6%
Numerical Approximation
12%
Operator
23%
Perturbation
10%
Qualitative Properties
12%
Representation Formula
15%
Resolvent
21%
Scalar
25%
Scattering
12%
Scattering Matrix
16%
Self-adjoint Operator
13%
Self-adjointness
14%
Shell
39%
Spectral Gap
7%
Spectral Properties
26%
Spectrality
24%
Straight Line
13%
Symmetric Operator
15%
Term
7%
Three-dimensional
12%
Trace Formula
7%
Tube
13%
Wave Operator
16%
Zigzag
34%
Physics & Astronomy
completeness
7%
curves
7%
eigenvalues
16%
electrostatics
5%
interactions
12%
operators
40%
perturbation
8%
S matrix theory
14%
scalars
14%
smear
6%
tubes
9%