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Czech Republic

Activities

Employment (1)

Czech Technical University in Prague: Prague, CZ

Full Professor (Department of Mathematics FJFI)
Employment
Source: Self-asserted source
David Krejcirik

Education and qualifications (5)

Charles University: Prague, CZ

2021 to present | Professor in Mathematical Analysis
Qualification
Source: Self-asserted source
David Krejcirik

Charles University: Prague, CZ

2018 to present | Doc (habilitation) in Mathematical Analysis
Qualification
Source: Self-asserted source
David Krejcirik

Czech Academy of Sciences: Prague, CZ

2013 to present | DSc in Mathematical Physics
Qualification
Source: Self-asserted source
David Krejcirik

Université de Toulon: La Garde, Provence-Alpes-Côte d'Azu, FR

2001 to present | PhD in Mathematics
Qualification
Source: Self-asserted source
David Krejcirik

Charles University: Prague, CZ

2001 to present | PhD in Theoretical Physics, Astronomy and Astrophysics
Qualification
Source: Self-asserted source
David Krejcirik

Funding (3)

New challenges for spectral theory: geometry, artificial materials and complex fields

2020 to 2024 | Grant
Grantová Agentura České Republiky (Praha, CZ)
GRANT_NUMBER:

20-17749X

Source: Self-asserted source
David Krejcirik

Quantum mechanics with non-self-adjoint operators: transition from spectra to pseudospectra

2018 to 2020 | Grant
Grantová Agentura České Republiky (Praha, CZ)
GRANT_NUMBER:

18-08835S

Source: Self-asserted source
David Krejcirik

Extremal spectral quantities and related problems

2016 to 2019 | Grant
Fundação para a Ciência e a Tecnologia (Lisboa, PT)
Part of GRANT_NUMBER:

ptdc/mat-cal/4334/2014

Source: Self-asserted source
David Krejcirik

Works (50 of 97)

Items per page:
Page 1 of 2

Localization of eigenvalues for non-self-adjoint Dirac and Klein–Gordon operators

Nonlinear Analysis
2022-01 | Journal article
Part of ISSN: 0362-546X
Source: Self-asserted source
David Krejcirik

A Sharp Form of the Discrete Hardy Inequality and the Keller–Pinchover–Pogorzelski Inequality

The American Mathematical Monthly
2022-01-27 | Journal article
Part of ISSN: 0002-9890
Part of ISSN: 1930-0972
Source: Self-asserted source
David Krejcirik

Spectral optimization of Dirac rectangles

Journal of Mathematical Physics
2022-01-01 | Journal article
Part of ISSN: 0022-2488
Part of ISSN: 1089-7658
Source: Self-asserted source
David Krejcirik

Sharp bounds for eigenvalues of biharmonic operators with complex potentials in low dimensions

Mathematische Nachrichten
2021-07 | Journal article
Part of ISSN: 0025-584X
Part of ISSN: 1522-2616
Source: Self-asserted source
David Krejcirik

Spectral analysis of the multidimensional diffusion operator with random jumps from the boundary

Journal of Evolution Equations
2021-06 | Journal article
Part of ISSN: 1424-3199
Part of ISSN: 1424-3202
Source: Self-asserted source
David Krejcirik

Soft quantum waveguides with an explicit cut-locus

Journal of Physics A: Mathematical and Theoretical
2021-03-19 | Journal article
Part of ISSN: 1751-8113
Part of ISSN: 1751-8121
Source: Self-asserted source
David Krejcirik

Bound states in semi-Dirac semi-metals

Physics Letters A
2021-01 | Journal article
Part of ISSN: 0375-9601
Source: Self-asserted source
David Krejcirik

Quantum strips in higher dimensions

Operators and Matrices
2020 | Journal article
Part of ISSN: 1846-3886
Source: Self-asserted source
David Krejcirik

From Lieb–Thirring Inequalities to Spectral Enclosures for the Damped Wave Equation

Integral Equations and Operator Theory
2020-12 | Journal article
Part of ISSN: 0378-620X
Part of ISSN: 1420-8989
Source: Self-asserted source
David Krejcirik

Absence of Eigenvalues of Dirac and Pauli Hamiltonians via the Method of Multipliers

Communications in Mathematical Physics
2020-10 | Journal article
Part of ISSN: 0010-3616
Part of ISSN: 1432-0916
Source: Self-asserted source
David Krejcirik

Correction to: Spectral analysis of the diffusion operator with random jumps from the boundary

Mathematische Zeitschrift
2020-10 | Journal article
Part of ISSN: 0025-5874
Part of ISSN: 1432-1823
Source: Self-asserted source
David Krejcirik

Absence of eigenvalues of non‐self‐adjoint Robin Laplacians on the half‐space

Proceedings of the London Mathematical Society
2020-09 | Journal article
Part of ISSN: 0024-6115
Part of ISSN: 1460-244X
Source: Self-asserted source
David Krejcirik

Effective quantum dynamics on the Möbius strip

Journal of Physics A: Mathematical and Theoretical
2020-09-18 | Journal article
Part of ISSN: 1751-8113
Part of ISSN: 1751-8121
Source: Self-asserted source
David Krejcirik

On the improvement of the Hardy inequality due to singular magnetic fields

Communications in Partial Differential Equations
2020-09-01 | Journal article
Part of ISSN: 0360-5302
Part of ISSN: 1532-4133
Source: Self-asserted source
David Krejcirik

Location of Eigenvalues of Non-self-adjoint Discrete Dirac Operators

Annales Henri Poincaré
2020-07 | Journal article
Part of ISSN: 1424-0637
Part of ISSN: 1424-0661
Source: Self-asserted source
David Krejcirik

Optimisation of the Lowest Robin Eigenvalue in the Exterior of a Compact Set, II: Non-Convex Domains and Higher Dimensions

Potential Analysis
2020-04 | Journal article
Part of ISSN: 0926-2601
Part of ISSN: 1572-929X
Source: Self-asserted source
David Krejcirik

Absolute continuity of the spectrum in a twisted Dirichlet-Neumann waveguide

Journal of Mathematical Physics
2020-01-01 | Journal article
Part of ISSN: 0022-2488
Part of ISSN: 1089-7658
Source: Self-asserted source
David Krejcirik

Spectral transitions for Aharonov-Bohm Laplacians on conical layers

Proceedings of the Royal Society of Edinburgh: Section A Mathematics
2019-12 | Journal article
Part of ISSN: 0308-2105
Part of ISSN: 1473-7124
Source: Self-asserted source
David Krejcirik

Location of eigenvalues of three-dimensional non-self-adjoint Dirac operators

Letters in Mathematical Physics
2019-07 | Journal article
Part of ISSN: 0377-9017
Part of ISSN: 1573-0530
Source: Self-asserted source
David Krejcirik

Pseudomodes for Schrödinger operators with complex potentials

Journal of Functional Analysis
2019-05 | Journal article
Part of ISSN: 0022-1236
Source: Self-asserted source
David Krejcirik

Spectral analysis of sheared nanoribbons

Zeitschrift für angewandte Mathematik und Physik
2019-04 | Journal article
Part of ISSN: 0044-2275
Part of ISSN: 1420-9039
Source: Self-asserted source
David Krejcirik

The Cheeger constant of curved tubes

Archiv der Mathematik
2019-04 | Journal article
Part of ISSN: 0003-889X
Part of ISSN: 1420-8938
Source: Self-asserted source
David Krejcirik

Location of hot spots in thin curved strips

Journal of Differential Equations
2019-03 | Journal article
Part of ISSN: 0022-0396
Source: Self-asserted source
David Krejcirik

Complex Magnetic Fields: An Improved Hardy--Laptev--Weidl Inequality and Quasi-Self-Adjointness

SIAM Journal on Mathematical Analysis
2019-01 | Journal article
Part of ISSN: 0036-1410
Part of ISSN: 1095-7154
Source: Self-asserted source
David Krejcirik

Optimisation of the lowest Robin eigenvalue in the exterior of a compact set

Journal of Convex Analysis
2018 | Journal article
Source: Self-asserted source
David Krejcirik

From Symmetry to Monotonicity

The Mathematical Intelligencer
2018-12 | Journal article
Part of ISSN: 0343-6993
Part of ISSN: 1866-7414
Source: Self-asserted source
David Krejcirik

Absence of eigenvalues of two-dimensional magnetic Schrödinger operators

Journal of Functional Analysis
2018-11 | Journal article
Part of ISSN: 0022-1236
Source: Self-asserted source
David Krejcirik

The minimally anisotropic metric operator in quasi-Hermitian quantum mechanics

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
2018-09 | Journal article
Part of ISSN: 1364-5021
Part of ISSN: 1471-2946
Source: Self-asserted source
David Krejcirik

Ruled Strips with Asymptotically Diverging Twisting

Annales Henri Poincaré
2018-07 | Journal article
Part of ISSN: 1424-0637
Part of ISSN: 1424-0661
Source: Self-asserted source
David Krejcirik

Spectral stability of Schrödinger operators with subordinated complex potentials

Journal of Spectral Theory
2018-06-02 | Journal article
Part of ISSN: 1664-039X
Source: Self-asserted source
David Krejcirik

Lifshits Tails for Randomly Twisted Quantum Waveguides

Journal of Statistical Physics
2018-05 | Journal article
Part of ISSN: 0022-4715
Part of ISSN: 1572-9613
Source: Self-asserted source
David Krejcirik

An indefinite Laplacian on a rectangle

Journal d'Analyse Mathématique
2018-02 | Journal article
Part of ISSN: 0021-7670
Part of ISSN: 1565-8538
Source: Self-asserted source
David Krejcirik

REDUCTION OF DIMENSION AS A CONSEQUENCE OF NORM‐RESOLVENT CONVERGENCE AND APPLICATIONS

Mathematika
2018-01 | Journal article
Part of ISSN: 0025-5793
Part of ISSN: 2041-7942
Source: Self-asserted source
David Krejcirik

Pseudospectra of the Schrödinger operator with a discontinuous complex potential

Journal of Spectral Theory
2017 | Journal article
Part of ISSN: 1664-039X
Source: Self-asserted source
David Krejcirik

Bounds and extremal domains for Robin eigenvalues with negative boundary parameter

Advances in Calculus of Variations
2017-10-01 | Journal article
Part of ISSN: 1864-8266
Part of ISSN: 1864-8258
Source: Self-asserted source
David Krejcirik

Non-accretive Schrödinger operators and exponential decay of their eigenfunctions

Israel Journal of Mathematics
2017-09 | Journal article
Part of ISSN: 0021-2172
Part of ISSN: 1565-8511
Source: Self-asserted source
David Krejcirik

Asymptotic spectral analysis in colliding leaky quantum layers

Journal of Mathematical Analysis and Applications
2017-02 | Journal article
Part of ISSN: 0022-247X
Source: Self-asserted source
David Krejcirik

The equality case in a Poincaré–Wirtinger type inequality

Rendiconti Lincei - Matematica e Applicazioni
2016 | Journal article
Part of ISSN: 1120-6330
Source: Self-asserted source
David Krejcirik

The Hardy inequality and the heat flow in curved wedges

Portugaliae Mathematica
2016 | Journal article
Part of ISSN: 0032-5155
Source: Self-asserted source
David Krejcirik

Spectral analysis of the diffusion operator with random jumps from the boundary

Mathematische Zeitschrift
2016-12 | Journal article
Part of ISSN: 0025-5874
Part of ISSN: 1432-1823
Source: Self-asserted source
David Krejcirik

The Hardy inequality and the heat equation with magnetic field in any dimension

Communications in Partial Differential Equations
2016-07-02 | Journal article
Part of ISSN: 0360-5302
Part of ISSN: 1532-4133
Source: Self-asserted source
David Krejcirik

Alexandrov's isodiametric conjecture and the cut locus of a surface

Tohoku Mathematical Journal
2015 | Journal article
Source: Self-asserted source
David Krejcirik

Elements of Spectral Theory without the Spectral Theorem

Non-Selfadjoint Operators in Quantum Physics: Mathematical Aspects
2015 | Book chapter
Source: Self-asserted source
David Krejcirik

Pseudospectra in non-Hermitian quantum mechanics

Journal of Mathematical Physics
2015-10 | Journal article
Part of ISSN: 0022-2488
Part of ISSN: 1089-7658
Source: Self-asserted source
David Krejcirik

The Magnetic Laplacian in Shrinking Tubular Neighborhoods of Hypersurfaces

The Journal of Geometric Analysis
2015-10 | Journal article
Part of ISSN: 1050-6926
Part of ISSN: 1559-002X
Source: Self-asserted source
David Krejcirik

The first Robin eigenvalue with negative boundary parameter

Advances in Mathematics
2015-08 | Journal article
Part of ISSN: 0001-8708
Source: Self-asserted source
David Krejcirik

Waveguides with asymptotically diverging twisting

Applied Mathematics Letters
2015-08 | Journal article
Part of ISSN: 0893-9659
Source: Self-asserted source
David Krejcirik

Hardy Inequalities in Globally Twisted Waveguides

Letters in Mathematical Physics
2015-07 | Journal article
Part of ISSN: 0377-9017
Part of ISSN: 1573-0530
Source: Self-asserted source
David Krejcirik

Corrigendum to “Qualitative analysis of trapped Dirac fermions in graphene” [Ann. Physics 349 (2014) 268–287]

Annals of Physics
2015-02 | Journal article
Part of ISSN: 0003-4916
Source: Self-asserted source
David Krejcirik

Nodal sets of thin curved layers

Journal of Differential Equations
2015-01 | Journal article
Part of ISSN: 0022-0396
Source: Self-asserted source
David Krejcirik
Items per page:
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