Class information for:
Level 1: KREIN SPACE//DEFINITIZABLE OPERATOR//J SELF ADJOINT OPERATOR

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
14 4 MATHEMATICS//MATHEMATICS, APPLIED//MATH 912822
468 3       PHYSICS, MATHEMATICAL//MATHEMATICS//JOURNAL OF MATHEMATICAL PHYSICS 25817
1864 2             STURM LIOUVILLE PROBLEM//STURM LIOUVILLE OPERATOR//INVERSE SPECTRAL PROBLEM 6417
17753 1                   KREIN SPACE//DEFINITIZABLE OPERATOR//J SELF ADJOINT OPERATOR 612

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 KREIN SPACE authKW 1001800 9% 34% 57
2 DEFINITIZABLE OPERATOR authKW 873457 3% 81% 21
3 J SELF ADJOINT OPERATOR authKW 463471 1% 100% 9
4 INDEFINITE STURM LIOUVILLE PROBLEM authKW 463465 2% 75% 12
5 GENERALIZED NEVANLINNA FUNCTION authKW 413800 2% 54% 15
6 SUBSPACE PERTURBATION PROBLEM authKW 315416 1% 88% 7
7 NON REAL EIGENVALUE authKW 308981 1% 100% 6
8 ANAL TECH MATH address 265597 2% 37% 14
9 LOCAL SPECTRAL FUNCTION authKW 257484 1% 100% 5
10 FORWARD BACKWARD HEAT EQUATION authKW 231733 1% 75% 6

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Mathematics 19826 77% 0% 471
2 Mathematics, Applied 4078 33% 0% 201
3 Physics, Mathematical 273 7% 0% 40
4 Physics, Multidisciplinary 20 4% 0% 27
5 Multidisciplinary Sciences 16 1% 0% 7
6 Physics, Nuclear 7 2% 0% 11
7 Mechanics 5 2% 0% 13
8 Physics, Fluids & Plasmas 0 1% 0% 4
9 Integrative & Complementary Medicine 0 0% 0% 1
10 Physics, Particles & Fields -0 1% 0% 6

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ANAL TECH MATH 265597 2% 37% 14
2 MATH MA 6 4 154490 0% 100% 3
3 FB MATH 08 102990 1% 50% 4
4 FB MATH 3 68657 1% 33% 4
5 ANAL TECH MATHEMAT 51497 0% 100% 1
6 C4 ISR 51497 0% 100% 1
7 GOZTEPE KAMPUSU 51497 0% 100% 1
8 HBEREICH MATH MA 6 4 51497 0% 100% 1
9 INT ANAL TECH MATH 51497 0% 100% 1
10 LMPA EA 2597 51497 0% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 INTEGRAL EQUATIONS AND OPERATOR THEORY 113820 12% 3% 71
2 MATHEMATISCHE NACHRICHTEN 59301 11% 2% 69
3 OPERATORS AND MATRICES 12643 2% 2% 11
4 PROCEEDINGS OF THE ROYAL SOCIETY OF EDINBURGH SECTION A-MATHEMATICS 11291 4% 1% 24
5 FUNCTIONAL ANALYSIS AND ITS APPLICATIONS 9493 3% 1% 18
6 JOURNAL OF OPERATOR THEORY 8808 2% 1% 15
7 JOURNAL OF SPECTRAL THEORY 7519 1% 3% 5
8 MATHEMATICAL NOTES 4843 4% 0% 22
9 ACTA SCIENTIARUM MATHEMATICARUM 2785 1% 1% 4
10 JOURNAL OF FUNCTIONAL ANALYSIS 2482 3% 0% 18

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 KREIN SPACE 1001800 9% 34% 57 Search KREIN+SPACE Search KREIN+SPACE
2 DEFINITIZABLE OPERATOR 873457 3% 81% 21 Search DEFINITIZABLE+OPERATOR Search DEFINITIZABLE+OPERATOR
3 J SELF ADJOINT OPERATOR 463471 1% 100% 9 Search J+SELF+ADJOINT+OPERATOR Search J+SELF+ADJOINT+OPERATOR
4 INDEFINITE STURM LIOUVILLE PROBLEM 463465 2% 75% 12 Search INDEFINITE+STURM+LIOUVILLE+PROBLEM Search INDEFINITE+STURM+LIOUVILLE+PROBLEM
5 GENERALIZED NEVANLINNA FUNCTION 413800 2% 54% 15 Search GENERALIZED+NEVANLINNA+FUNCTION Search GENERALIZED+NEVANLINNA+FUNCTION
6 SUBSPACE PERTURBATION PROBLEM 315416 1% 88% 7 Search SUBSPACE+PERTURBATION+PROBLEM Search SUBSPACE+PERTURBATION+PROBLEM
7 NON REAL EIGENVALUE 308981 1% 100% 6 Search NON+REAL+EIGENVALUE Search NON+REAL+EIGENVALUE
8 LOCAL SPECTRAL FUNCTION 257484 1% 100% 5 Search LOCAL+SPECTRAL+FUNCTION Search LOCAL+SPECTRAL+FUNCTION
9 FORWARD BACKWARD HEAT EQUATION 231733 1% 75% 6 Search FORWARD+BACKWARD+HEAT+EQUATION Search FORWARD+BACKWARD+HEAT+EQUATION
10 OPERATOR ANGLE 205987 1% 100% 4 Search OPERATOR+ANGLE Search OPERATOR+ANGLE

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 1


rank cluster_id2 link
1 25176 TWO PARAMETER EIGENVALUE PROBLEM//MULTIPARAMETER EIGENVALUE PROBLEM//QUADRATIC TWO PARAMETER EIGENVALUE PROBLEM
2 29136 INFINITE DIMENSIONAL HAMILTONIAN OPERATOR//SYMPLECTIC ELASTICITY//SYMPLECTIC ORTHOGONALITY
3 5435 INVERSE NODAL PROBLEM//INVERSE SPECTRAL PROBLEM//STURM LIOUVILLE OPERATOR
4 36090 UNSATURATED NUMERICAL METHOD//DOUBLE DEGENERATION//AXISYMMETRIC NEUMANN PROBLEM
5 18849 TRANSPORT OPERATOR//FREDHOLM PERTURBATION//ESSENTIAL SPECTRA
6 30375 BANACH LIE POISSON SPACE//NONCOMMUTATIVE KAHLER GEOMETRY//PAIRS OF PROJECTIONS
7 7700 POINT INTERACTIONS//QUANTUM GRAPHS//SELF ADJOINT EXTENSION
8 25965 SPECTRAL PARAMETER POWER SERIES//PSEUDOANALYTIC FUNCTION//CP METHODS
9 28636 AEROELASTIC MODES//ROOT VECTORS//CONVOLUTION INTEGRAL OPERATOR
10 13292 CONJOINED BASIS//LIMIT POINT CASE//DISCRETE SYMPLECTIC SYSTEM

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