Mathematics
Self-adjoint Operator
100%
Operator Matrix
94%
Block Matrix
89%
Resolvent
78%
Eigenvalue
76%
Weyl Function
75%
Operator
74%
Symmetric Operator
70%
Variational Principle
66%
Sturm-Liouville Problem
61%
Canonical System
54%
Krein Space
54%
Self-adjoint Extension
50%
Indefinite Systems
50%
Elliptic Operator
48%
Fragmentation
46%
Enclosure
43%
Hypersurface
43%
Essential Spectrum
41%
Hamiltonian Systems
35%
Differential Expression
35%
Bounded Domain
32%
Singularity
31%
Ultrasonic Wave
28%
Hilbert space
28%
Pole
28%
Class
26%
Eigenvalue Estimates
24%
Differential operator
24%
Trace Formula
24%
Interaction
24%
Partial Differential Operators
24%
Coefficient
23%
Extension Theory
23%
Spectral Theory
22%
Spectral Theorem
20%
Inverse Theorems
20%
Unbounded Operators
20%
Continuation
20%
Dirichlet-to-Neumann Map
20%
Coagulation
20%
Fluorescence Spectroscopy
19%
Limit Point
19%
Estimate
18%
Inverse Spectral Problem
17%
Magnetohydrodynamics
17%
Spectral Problem
17%
Singular Coefficients
16%
Physics & Astronomy
operators
46%
eigenvalues
27%
variational principles
14%
Klein-Gordon equation
13%
ovens
12%
ultrasonic radiation
11%
uniqueness theorem
10%
theorems
10%
interactions
8%
fluorescence
7%
estimates
7%
viscosity
7%
moments
7%
Liouville equations
6%
differential operators
6%
coefficients
6%
Sturm-Liouville theory
6%
scattering
6%
characterization
5%
defects
5%
chirp
5%
spectroscopy
5%
