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Putnam, Calvin R.

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 Author ID: putnam.calvin-r Published as: Putnam, C. R.; Putnam, Calvin R.
 Documents Indexed: 142 Publications since 1948, including 1 Book
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Co-Authors

 126 single-authored 5 Wintner, Aurel 4 Clancey, Kevin F. 4 Hartman, Philip 1 Beck, W. A. 1 Conway, John B. 1 Helms, Lester L.
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Serials

 17 American Journal of Mathematics 12 Proceedings of the American Mathematical Society 10 Quarterly of Applied Mathematics 8 Transactions of the American Mathematical Society 7 Pacific Journal of Mathematics 6 Canadian Journal of Mathematics 6 Journal of Operator Theory 5 Acta Scientiarum Mathematicarum 5 Duke Mathematical Journal 5 Journal of the London Mathematical Society 4 Illinois Journal of Mathematics 4 Indiana University Mathematics Journal 4 Michigan Mathematical Journal 4 Journal of Mathematics and Mechanics 3 Mathematische Zeitschrift 3 Bulletin of the American Mathematical Society 3 Proceedings of the Glasgow Mathematical Association 2 Houston Journal of Mathematics 2 Journal of Mathematical Analysis and Applications 2 Journal of Functional Analysis 2 The Quarterly Journal of Mathematics. Oxford Second Series 2 Nieuw Archief voor Wiskunde. Derde Serie 2 Bollettino della Unione Matematica Italiana. Series III 2 Journal of the Society for Industrial & Applied Mathematics 1 American Mathematical Monthly 1 Acta Mathematica 1 Archiv der Mathematik 1 Commentarii Mathematici Helvetici 1 Glasgow Mathematical Journal 1 International Journal of Mathematics and Mathematical Sciences 1 Integral Equations and Operator Theory 1 Journal of the Mathematical Society of Japan 1 Mathematische Annalen 1 Mathematicae Notae 1 Portugaliae Mathematica 1 Proceedings of the National Academy of Sciences of the United States of America 1 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics 1 American Journal of Physics 1 Physical Review, II. Series 1 Ergebnisse der Mathematik und ihrer Grenzgebiete
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Fields

 54 Operator theory (47-XX) 1 Real functions (26-XX) 1 Measure and integration (28-XX) 1 Functions of a complex variable (30-XX) 1 Ordinary differential equations (34-XX) 1 Approximations and expansions (41-XX) 1 Integral equations (45-XX) 1 Functional analysis (46-XX)

Citations contained in zbMATH Open

86 Publications have been cited 586 times in 430 Documents Cited by Year
Commutation properties of Hilbert space operators. Zbl 0149.35104
Putnam, C. R.
1967
On normal operators in Hilbert space. Zbl 0042.34501
Putnam, C. R.
1951
An inequality for the area of hyponormal spectra. Zbl 0197.10102
Putnam, C. R.
1970
Hyponormal contractions and strong power convergence. Zbl 0321.47018
Putnam, C. R.
1975
On the spectra of semi-normal operators. Zbl 0138.07901
Putnam, C. R.
1965
On the non-periodicity of the zeros of the Riemann zeta-function. Zbl 0055.06904
Putnam, C. R.
1954
The spectra of subnormal operators. Zbl 0214.38902
Putnam, C. R.
1971
Remarks on periodic sequences and the Riemannian zeta-function. Zbl 0056.29503
Putnam, C. R.
1954
The spectra of operators having resolvents of first-order growth. Zbl 0159.19702
Putnam, C. R.
1968
On commutators of bounded matrices. Zbl 0042.01304
Putnam, C. R.
1951
The least cluster point of the spectrum of boundary value problems. Zbl 0035.18304
Hartman, Philip; Putnam, Calvin R.
1948
The local spectral behavior of completely subnormal operators. Zbl 0229.47021
Clancey, K. F.; Putnam, C. R.
1972
On commutators and Jacobi matrices. Zbl 0078.11601
Putnam, C. R.
1957
Operators satisfying a $$G_1$$ condition. Zbl 0437.47014
Putnam, C. R.
1979
Resolvent vectors, invariant subspaces, and sets of zero capacity. Zbl 0245.47003
Putnam, C. R.
1973
On square roots of normal operators. Zbl 0083.11203
Putnam, C. R.
1957
A note on normal operators and their adjoints. Zbl 0071.33703
Beck, W. A.; Putnam, C. R.
1956
The spectra of hyponormal integral operators. Zbl 0228.47035
Clancey, K. F.; Putnam, C. R.
1971
The gaps in the essential spectra of wave equations. Zbl 0038.24804
Hartman, Philip; Putnam, Calvin R.
1950
Commutators and absolutely continuous operators. Zbl 0101.33203
Putnam, C. R.
1958
The connectedness of the orthogonal group in Hilbert space. Zbl 0042.26002
Putnam, Calvin R.; Wintner, Aurel
1951
On the spectra of certain boundary value problems. Zbl 0031.40102
Putnam, C. R.
1949
An application of spectral theory to a singular calculus of variations problem. Zbl 0038.26501
Putnam, C. R.
1948
An irreducible subnormal operator with infinite multiplicities. Zbl 0568.47016
Conway, J. B.; Putnam, C. R.
1985
Spectra of polar factors of hypo normal operators. Zbl 0254.47040
Putnam, C. R.
1974
A similarity between hyponormal and normal spectra. Zbl 0239.47021
Putnam, C. R.
1972
Normal parts of certain operators. Zbl 0236.47010
Clancey, K. F.; Putnam, C. R.
1972
The spectra of semi-normal singular integral operators. Zbl 0192.47802
Putnam, C. R.
1970
Eigenvalues and boundary spectra. Zbl 0163.37803
Putnam, C. R.
1968
Commutators, absolutely continuous spectra, and singular integral operators. Zbl 0117.09103
Putnam, C. R.
1964
Almost normal operators, their spectra and invariant subspaces. Zbl 0267.47016
Putnam, C. R.
1973
On the structure of semi-normal operators. Zbl 0199.45601
Putnam, C. R.
1963
Unilateral stability and almost periodicity. Zbl 0107.29501
Putnam, C. R.
1960
On bounded matrices with non-negative elements. Zbl 0087.32201
Putnam, C. R.
1958
The orthogonal group in Hilbert space. Zbl 0049.35502
Putnam, Calvin R.; Wintner, Aurel
1952
On isolated eigenfunctions associated with bounded potentials. Zbl 0037.34203
Putnam, C. R.
1950
Absolute values of completely hyponormal operators. Zbl 0496.47023
Putnam, C. R.
1982
Generalized projections and reducible subnormal operators. Zbl 0327.47010
Putnam, C. R.
1976
Invariant subspaces of certain subnormal operators. Zbl 0287.47019
Putnam, C. R.
1974
The role of zero sets in the spectra of hyponormal operators. Zbl 0283.47019
Putnam, C. R.
1974
The spectra of unbounded hyponormal operators. Zbl 0241.47021
Putnam, C. R.
1972
Trace norm inequalities for the measure of hyponormal spectra. Zbl 0239.47022
Putnam, C. R.
1972
The spectra of completely hyponormal operators. Zbl 0219.47020
Putnam, C. R.
1971
Hyponormal operators and low density spectra. Zbl 0157.45503
Putnam, C. R.
1968
On differences of unitarily equivalent self-adjoint operators. Zbl 0104.08903
Putnam, C. R.
1960
On Toeplitz matrices, absolute continuity, and unitary equivalence. Zbl 0101.33301
Putnam, C. R.
1959
Singly generated hyponormal $$C^*$$-algebras. Zbl 0538.47016
Putnam, C. R.
1984
Almost isolated spectral parts and invariant subspaces. Zbl 0304.47029
Putnam, C. R.
1976
Absolute continuity of singular integral operators. Zbl 0179.47001
Putnam, C. R.
1969
On square roots and logarithms of self-adjoint operators. Zbl 0132.10104
Putnam, C. R.
1958
On the spectra of group commutators. Zbl 0091.10503
Putnam, C. R.; Wintner, A.
1958
Stability in incompressible systems. Zbl 0083.08501
Helms, L. L.; Putnam, C. R.
1958
On semi-normal operators. Zbl 0083.34702
Putnam, C. R.
1957
Note on some oscillation criteria. Zbl 0067.06202
Putnam, C. R.
1955
On the spectra of commutators. Zbl 0056.34301
Putnam, C. R.
1954
On the continuous spectra of singular boundary value problems. Zbl 0055.31602
Putnam, C. R.
1954
Remarks on certain operators of quantum field theory. Zbl 0055.21307
Putnam, C. R.
1954
On the unboundedness of the essential spectrum. Zbl 0048.32401
Putnam, C. R.
1952
Linear differential equations with almost periodic or Laplace transform coefficients. Zbl 0044.08902
Putnam, Calvin R.; Wintner, Aurel
1951
An oscillation criterion involving a minimum principle. Zbl 0037.34302
Putnam, C. R.
1949
Absolute continuity and hyponormal operators. Zbl 0463.47019
Putnam, C. R.
1981
A polar area inequality for hyponormal spectra. Zbl 0452.47026
Putnam, C. R.
1980
Invariant subspaces of operators having nearly disconnected spectra. Zbl 0465.47011
Putnam, C. R.
1979
Hyponormal operators and spectral multiplicity. Zbl 0436.47017
Putnam, C. R.
1979
Rational approximation and Swiss cheeses. Zbl 0373.30036
Putnam, C. R.
1977
Spectra and measure inequalities. Zbl 0367.47005
Putnam, C. R.
1977
Peak sets and subnormal operators. Zbl 0344.47015
Putnam, C. R.
1977
Positive perturbations and unitary equivalence. Zbl 0343.47020
Putnam, C. R.
1977
A norm inequality in hyponormal operator theory. Zbl 0304.47030
Putnam, C. R.
1976
Dissipative J-self-adjoint operators and associated J-isometries. Zbl 0268.47038
Putnam, C. R.
1975
An inequality forthe area of hyponormal spectra. Zbl 0191.13302
Putnam, C. R.
1970
Absolute continuity and generalized Reynolds operators. Zbl 0182.17404
Putnam, C. R.
1969
Singular potentials and positive spectra. Zbl 0169.44201
Putnam, C. R.
1968
Perturbations of bounded operators. Zbl 0218.47013
Putnam, C. R.
1967
Wave operators and absolutely continuous spectra. Zbl 0195.41604
Putnam, C. R.
1964
On the spectra of unitary half-scattering operators. Zbl 0114.06001
Putnam, C. R.
1962
Commutators, perturbations, and unitary spectra. Zbl 0173.43004
Putnam, C. R.
1961
Group commutators of bounded operators in Hilbert space. Zbl 0095.31301
Putnam, C. R.
1960
On future and past stability in incompressible systems. Zbl 0081.18203
Putnam, C. R.
1957
Continuous spectra and unitary equivalence. Zbl 0081.12004
Putnam, C. R.
1957
On the gaps in the spectrum of the Hill equation. Zbl 0057.31804
Putnam, C. R.
1954
Stability and almost periodicity in dynamical systems. Zbl 0056.08501
Putnam, C. R.
1954
On the least eigenvalue of Hill’s equation. Zbl 0044.09204
Putnam, C. R.
1951
The quantum-mechanical equations of motion and commutation relations. Zbl 0043.21101
Putnam, C. R.
1951
The comparison of spectra belonging to potentials with a bounded difference. Zbl 0042.32603
Putnam, C. R.
1951
The cluster spectra of bounded potentials. Zbl 0035.18401
Putnam, C. R.
1949
An irreducible subnormal operator with infinite multiplicities. Zbl 0568.47016
Conway, J. B.; Putnam, C. R.
1985
Singly generated hyponormal $$C^*$$-algebras. Zbl 0538.47016
Putnam, C. R.
1984
Absolute values of completely hyponormal operators. Zbl 0496.47023
Putnam, C. R.
1982
Absolute continuity and hyponormal operators. Zbl 0463.47019
Putnam, C. R.
1981
A polar area inequality for hyponormal spectra. Zbl 0452.47026
Putnam, C. R.
1980
Operators satisfying a $$G_1$$ condition. Zbl 0437.47014
Putnam, C. R.
1979
Invariant subspaces of operators having nearly disconnected spectra. Zbl 0465.47011
Putnam, C. R.
1979
Hyponormal operators and spectral multiplicity. Zbl 0436.47017
Putnam, C. R.
1979
Rational approximation and Swiss cheeses. Zbl 0373.30036
Putnam, C. R.
1977
Spectra and measure inequalities. Zbl 0367.47005
Putnam, C. R.
1977
Peak sets and subnormal operators. Zbl 0344.47015
Putnam, C. R.
1977
Positive perturbations and unitary equivalence. Zbl 0343.47020
Putnam, C. R.
1977
Generalized projections and reducible subnormal operators. Zbl 0327.47010
Putnam, C. R.
1976
Almost isolated spectral parts and invariant subspaces. Zbl 0304.47029
Putnam, C. R.
1976
A norm inequality in hyponormal operator theory. Zbl 0304.47030
Putnam, C. R.
1976
Hyponormal contractions and strong power convergence. Zbl 0321.47018
Putnam, C. R.
1975
Dissipative J-self-adjoint operators and associated J-isometries. Zbl 0268.47038
Putnam, C. R.
1975
Spectra of polar factors of hypo normal operators. Zbl 0254.47040
Putnam, C. R.
1974
Invariant subspaces of certain subnormal operators. Zbl 0287.47019
Putnam, C. R.
1974
The role of zero sets in the spectra of hyponormal operators. Zbl 0283.47019
Putnam, C. R.
1974
Resolvent vectors, invariant subspaces, and sets of zero capacity. Zbl 0245.47003
Putnam, C. R.
1973
Almost normal operators, their spectra and invariant subspaces. Zbl 0267.47016
Putnam, C. R.
1973
The local spectral behavior of completely subnormal operators. Zbl 0229.47021
Clancey, K. F.; Putnam, C. R.
1972
A similarity between hyponormal and normal spectra. Zbl 0239.47021
Putnam, C. R.
1972
Normal parts of certain operators. Zbl 0236.47010
Clancey, K. F.; Putnam, C. R.
1972
The spectra of unbounded hyponormal operators. Zbl 0241.47021
Putnam, C. R.
1972
Trace norm inequalities for the measure of hyponormal spectra. Zbl 0239.47022
Putnam, C. R.
1972
The spectra of subnormal operators. Zbl 0214.38902
Putnam, C. R.
1971
The spectra of hyponormal integral operators. Zbl 0228.47035
Clancey, K. F.; Putnam, C. R.
1971
The spectra of completely hyponormal operators. Zbl 0219.47020
Putnam, C. R.
1971
An inequality for the area of hyponormal spectra. Zbl 0197.10102
Putnam, C. R.
1970
The spectra of semi-normal singular integral operators. Zbl 0192.47802
Putnam, C. R.
1970
An inequality forthe area of hyponormal spectra. Zbl 0191.13302
Putnam, C. R.
1970
Absolute continuity of singular integral operators. Zbl 0179.47001
Putnam, C. R.
1969
Absolute continuity and generalized Reynolds operators. Zbl 0182.17404
Putnam, C. R.
1969
The spectra of operators having resolvents of first-order growth. Zbl 0159.19702
Putnam, C. R.
1968
Eigenvalues and boundary spectra. Zbl 0163.37803
Putnam, C. R.
1968
Hyponormal operators and low density spectra. Zbl 0157.45503
Putnam, C. R.
1968
Singular potentials and positive spectra. Zbl 0169.44201
Putnam, C. R.
1968
Commutation properties of Hilbert space operators. Zbl 0149.35104
Putnam, C. R.
1967
Perturbations of bounded operators. Zbl 0218.47013
Putnam, C. R.
1967
On the spectra of semi-normal operators. Zbl 0138.07901
Putnam, C. R.
1965
Commutators, absolutely continuous spectra, and singular integral operators. Zbl 0117.09103
Putnam, C. R.
1964
Wave operators and absolutely continuous spectra. Zbl 0195.41604
Putnam, C. R.
1964
On the structure of semi-normal operators. Zbl 0199.45601
Putnam, C. R.
1963
On the spectra of unitary half-scattering operators. Zbl 0114.06001
Putnam, C. R.
1962
Commutators, perturbations, and unitary spectra. Zbl 0173.43004
Putnam, C. R.
1961
Unilateral stability and almost periodicity. Zbl 0107.29501
Putnam, C. R.
1960
On differences of unitarily equivalent self-adjoint operators. Zbl 0104.08903
Putnam, C. R.
1960
Group commutators of bounded operators in Hilbert space. Zbl 0095.31301
Putnam, C. R.
1960
On Toeplitz matrices, absolute continuity, and unitary equivalence. Zbl 0101.33301
Putnam, C. R.
1959
Commutators and absolutely continuous operators. Zbl 0101.33203
Putnam, C. R.
1958
On bounded matrices with non-negative elements. Zbl 0087.32201
Putnam, C. R.
1958
On square roots and logarithms of self-adjoint operators. Zbl 0132.10104
Putnam, C. R.
1958
On the spectra of group commutators. Zbl 0091.10503
Putnam, C. R.; Wintner, A.
1958
Stability in incompressible systems. Zbl 0083.08501
Helms, L. L.; Putnam, C. R.
1958
On commutators and Jacobi matrices. Zbl 0078.11601
Putnam, C. R.
1957
On square roots of normal operators. Zbl 0083.11203
Putnam, C. R.
1957
On semi-normal operators. Zbl 0083.34702
Putnam, C. R.
1957
On future and past stability in incompressible systems. Zbl 0081.18203
Putnam, C. R.
1957
Continuous spectra and unitary equivalence. Zbl 0081.12004
Putnam, C. R.
1957
A note on normal operators and their adjoints. Zbl 0071.33703
Beck, W. A.; Putnam, C. R.
1956
Note on some oscillation criteria. Zbl 0067.06202
Putnam, C. R.
1955
On the non-periodicity of the zeros of the Riemann zeta-function. Zbl 0055.06904
Putnam, C. R.
1954
Remarks on periodic sequences and the Riemannian zeta-function. Zbl 0056.29503
Putnam, C. R.
1954
On the spectra of commutators. Zbl 0056.34301
Putnam, C. R.
1954
On the continuous spectra of singular boundary value problems. Zbl 0055.31602
Putnam, C. R.
1954
Remarks on certain operators of quantum field theory. Zbl 0055.21307
Putnam, C. R.
1954
On the gaps in the spectrum of the Hill equation. Zbl 0057.31804
Putnam, C. R.
1954
Stability and almost periodicity in dynamical systems. Zbl 0056.08501
Putnam, C. R.
1954
The orthogonal group in Hilbert space. Zbl 0049.35502
Putnam, Calvin R.; Wintner, Aurel
1952
On the unboundedness of the essential spectrum. Zbl 0048.32401
Putnam, C. R.
1952
On normal operators in Hilbert space. Zbl 0042.34501
Putnam, C. R.
1951
On commutators of bounded matrices. Zbl 0042.01304
Putnam, C. R.
1951
The connectedness of the orthogonal group in Hilbert space. Zbl 0042.26002
Putnam, Calvin R.; Wintner, Aurel
1951
Linear differential equations with almost periodic or Laplace transform coefficients. Zbl 0044.08902
Putnam, Calvin R.; Wintner, Aurel
1951
On the least eigenvalue of Hill’s equation. Zbl 0044.09204
Putnam, C. R.
1951
The quantum-mechanical equations of motion and commutation relations. Zbl 0043.21101
Putnam, C. R.
1951
The comparison of spectra belonging to potentials with a bounded difference. Zbl 0042.32603
Putnam, C. R.
1951
The gaps in the essential spectra of wave equations. Zbl 0038.24804
Hartman, Philip; Putnam, Calvin R.
1950
On isolated eigenfunctions associated with bounded potentials. Zbl 0037.34203
Putnam, C. R.
1950
On the spectra of certain boundary value problems. Zbl 0031.40102
Putnam, C. R.
1949
An oscillation criterion involving a minimum principle. Zbl 0037.34302
Putnam, C. R.
1949
The cluster spectra of bounded potentials. Zbl 0035.18401
Putnam, C. R.
1949
The least cluster point of the spectrum of boundary value problems. Zbl 0035.18304
Hartman, Philip; Putnam, Calvin R.
1948
An application of spectral theory to a singular calculus of variations problem. Zbl 0038.26501
Putnam, C. R.
1948
all top 5