N. Ya. Krupnik

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Person:748834

Available identifiers

zbMath Open krupnik.naum-yakovlevichWikidataQ4242237 ScholiaQ4242237MaRDI QIDQ748834

List of research outcomes

PublicationDate of PublicationType
On the Norm of Linear Combinations of Projections and Some Characterizations of Hilbert Spaces2017-06-14Paper
https://portal.mardi4nfdi.de/entity/Q57441702016-02-17Paper
On the inverse-closedness of matrix subalgebras2015-03-16Paper
https://portal.mardi4nfdi.de/entity/Q31891602014-09-09Paper
Invertibility of Certain Fredholm Operators2012-09-21Paper
The Spectrum of Singular Integral Operators in L p Spaces2011-03-15Paper
On an Algebra Generated by the Toeplitz Matrices in the Spaces h p2011-03-15Paper
On Singular Integral Equations with Unbounded Coefficients2011-03-15Paper
Singular Integral Equations with Continuous Coefficients on a Composed Contour2011-03-15Paper
On a Local Principle and Algebras Generated by Toeplitz Matrices2011-03-15Paper
The Symbol of Singular Integral Operators on a Composed Contour2011-03-15Paper
One-dimensional Singular Integral Operators with Shift2011-03-15Paper
Algebras of Singular Integral Operators with Shift2011-03-15Paper
https://portal.mardi4nfdi.de/entity/Q35740402010-07-09Paper
On the norms of singular integral operators on contours with intersections2009-12-14Paper
Convolution equations and singular integral operators. Selected papers of Israel Gohberg and Georg Heinig, Israel Gohberg and Nahum Krupnik. Transl. from the Russian by Oleksiy Karlovych. Edited by Leonid Lerer, Vadim Olshevsky and Ilya M. Spitkovsky2009-11-05Paper
https://portal.mardi4nfdi.de/entity/Q34364562007-05-08Paper
Sets of matrices with given joint numerical range2007-02-14Paper
An explicit factorization algorithm2004-10-01Paper
On the lengths of Jordan chains for eigenvalues on the boundary of numerical range of quadratic operator polynomial2004-08-06Paper
https://portal.mardi4nfdi.de/entity/Q45500962003-02-19Paper
Generalization of the determinants for trace-potent linear operators2002-05-21Paper
On the continuity of the spectrum in certain Banach algebras2002-01-07Paper
https://portal.mardi4nfdi.de/entity/Q48012812002-01-01Paper
Matrix symbol of order two for some Banach algebras2001-11-06Paper
Minimal number of idempotent generators for certain algebras2001-10-12Paper
On trivial and non-trivial \(n\)-homogeneous \(C^*\)-algebras2001-10-12Paper
Critical points of essential norms of singular integral operators in weighted spaces2000-07-05Paper
Traces and determinants of linear operators2000-02-21Paper
On the norms of polynomials of two adjoint projections and a shift2000-02-15Paper
An algebra of integral operators with fixed singularities in kernels2000-02-14Paper
Symmetrization of the symbol in Banach algebras generated by idempotents2000-01-25Paper
https://portal.mardi4nfdi.de/entity/Q43563041998-03-12Paper
Hilbert-Carleman and regularized determinants for linear operators1998-02-05Paper
On the norms of singular integral operators along certain curves with intersections1998-02-05Paper
https://portal.mardi4nfdi.de/entity/Q43562961997-09-23Paper
Normal Toeplitz Matrices1997-09-18Paper
Traces and determinants of linear operators1997-04-15Paper
On invertibility symbols in Banach algebras1996-10-07Paper
On \(C^*\)-algebras generated by idempotents1996-06-30Paper
Norms of the singular integral operator with Cauchy kernel along certain contours1996-02-01Paper
On the norm of singular integral operator on curves with cusps1995-06-19Paper
https://portal.mardi4nfdi.de/entity/Q43177761994-12-21Paper
Banach algebras of singular integral operators with piecewise continuous coefficients. General contour and weight1994-11-17Paper
Invertibility symbol for a Banach algebra generated by two idempotents and a shift1994-09-28Paper
On \(A\)-continuity of real functions1994-08-11Paper
Extension theorems for Fredholm and invertibility symbols1993-08-17Paper
Extension theorems for invertibility symbols in Banach algebras1993-06-29Paper
Minimal number of idempotent generators of matrix algebras over arbitrary field1993-03-10Paper
https://portal.mardi4nfdi.de/entity/Q40231231993-01-23Paper
One-dimensional linear singular integral equations. I. Introduction. Transl. from the German by Bernd Luderer and Steffen Roch1992-09-18Paper
The conditions of selfadjointness of the operator of singular integration1992-06-26Paper
On the norm of polynomials of two adjoint projections1992-06-25Paper
https://portal.mardi4nfdi.de/entity/Q47121091992-06-25Paper
Norm of a linear combination of projectors in Hilbert space1989-01-01Paper
The Structure of Some BANACH Algebras Fulfilling a Standard Identity1989-01-01Paper
https://portal.mardi4nfdi.de/entity/Q42046861989-01-01Paper
A general look at local principles with special emphasis on the norm computation aspect1988-01-01Paper
Local principle of computation of the factor-norms of singular integral operators1988-01-01Paper
https://portal.mardi4nfdi.de/entity/Q38036991988-01-01Paper
Banach algebras with symbol and singular integral operators. Transl. from the Russian by A. Iacob1987-01-01Paper
Exact constant in Simonenko's theorem on an envelope of a family of operators of local type1986-01-01Paper
https://portal.mardi4nfdi.de/entity/Q37060111985-01-01Paper
https://portal.mardi4nfdi.de/entity/Q47210891985-01-01Paper
https://portal.mardi4nfdi.de/entity/Q37230891984-01-01Paper
https://portal.mardi4nfdi.de/entity/Q37268031984-01-01Paper
https://portal.mardi4nfdi.de/entity/Q37822771984-01-01Paper
https://portal.mardi4nfdi.de/entity/Q38248741984-01-01Paper
https://portal.mardi4nfdi.de/entity/Q33359151983-01-01Paper
https://portal.mardi4nfdi.de/entity/Q39526561982-01-01Paper
https://portal.mardi4nfdi.de/entity/Q47433291982-01-01Paper
https://portal.mardi4nfdi.de/entity/Q39254181981-01-01Paper
https://portal.mardi4nfdi.de/entity/Q39302331981-01-01Paper
https://portal.mardi4nfdi.de/entity/Q39378871981-01-01Paper
https://portal.mardi4nfdi.de/entity/Q39378901981-01-01Paper
A sufficient set of \(n\)-dimensional representations of a Banach algebra and the n-symbol1980-01-01Paper
https://portal.mardi4nfdi.de/entity/Q38912291980-01-01Paper
https://portal.mardi4nfdi.de/entity/Q38975711980-01-01Paper
https://portal.mardi4nfdi.de/entity/Q39254191980-01-01Paper
https://portal.mardi4nfdi.de/entity/Q42013361979-01-01Paper
https://portal.mardi4nfdi.de/entity/Q38975741978-01-01Paper
On composite linear singular integral operators1978-01-01Paper
On the quotient norm of singular integral operators1978-01-01Paper
https://portal.mardi4nfdi.de/entity/Q38975481977-01-01Paper
https://portal.mardi4nfdi.de/entity/Q38975751977-01-01Paper
https://portal.mardi4nfdi.de/entity/Q41196851977-01-01Paper
On the algebra generated by Toeplitz matrices in ℎ_{𝑝} spaces1977-01-01Paper
https://portal.mardi4nfdi.de/entity/Q41507421977-01-01Paper
The norm of an operator of singular integration1976-01-01Paper
https://portal.mardi4nfdi.de/entity/Q41143751976-01-01Paper
https://portal.mardi4nfdi.de/entity/Q41639411976-01-01Paper
https://portal.mardi4nfdi.de/entity/Q41643851976-01-01Paper
https://portal.mardi4nfdi.de/entity/Q40842791975-01-01Paper
https://portal.mardi4nfdi.de/entity/Q40924241975-01-01Paper
https://portal.mardi4nfdi.de/entity/Q40924251975-01-01Paper
https://portal.mardi4nfdi.de/entity/Q41143931975-01-01Paper
https://portal.mardi4nfdi.de/entity/Q40660071974-01-01Paper
https://portal.mardi4nfdi.de/entity/Q40739651974-01-01Paper
The spectrum of one-dimensional singular integral operators with piecewise continuous coefficients1974-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56698551973-01-01Paper
https://portal.mardi4nfdi.de/entity/Q32158551973-01-01Paper
https://portal.mardi4nfdi.de/entity/Q38782401973-01-01Paper
https://portal.mardi4nfdi.de/entity/Q40436481973-01-01Paper
https://portal.mardi4nfdi.de/entity/Q40640551973-01-01Paper
SINGULAR INTEGRAL OPERATORS WITH PIECEWISE CONTINUOUS COEFFICIENTS AND THEIR SYMBOLS1972-01-01Paper
https://portal.mardi4nfdi.de/entity/Q41253281972-01-01Paper
https://portal.mardi4nfdi.de/entity/Q47759621972-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56242651971-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56446411971-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56054131970-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56286831970-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56286841970-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56359071970-01-01Paper
Algebra generated by one-dimensional singular integral operators with piecewise continuous coefficients1970-01-01Paper
https://portal.mardi4nfdi.de/entity/Q55819501969-01-01Paper
https://portal.mardi4nfdi.de/entity/Q55819511969-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56417111969-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56693521969-01-01Paper
On the algebra generated by Toeplitz matrices1969-01-01Paper
https://portal.mardi4nfdi.de/entity/Q55667221968-01-01Paper
A bounded orthonormal system of polygonals1968-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56374681968-01-01Paper
https://portal.mardi4nfdi.de/entity/Q56387531968-01-01Paper
https://portal.mardi4nfdi.de/entity/Q55778671965-01-01Paper
https://portal.mardi4nfdi.de/entity/Q55605291964-01-01Paper

Research outcomes over time


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