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- 1.0581986 - MÚ 2025 RIV CH eng J - Journal Article
Brandts, J. - Křížek, Michal - Somer, L.
Regular tessellations of maximally symmetric hyperbolic manifolds.
Symmetry-Basel. Roč. 16, č. 2 (2024), č. článku 141. E-ISSN 2073-8994
R&D Projects: GA ČR(CZ) GA24-10586S
Institutional support: RVO:67985840
Keywords : Euclidean space * spherical geometry * hyperbolic geometry * hypersphere
OECD category: Pure mathematics
Impact factor: 2.7, year: 2022
Method of publishing: Open access
https://doi.org/10.3390/sym16020141
Permanent Link: https://hdl.handle.net/11104/0350121File Download Size Commentary Version Access Krizek1.pdf 0 658.4 KB Publisher’s postprint open-access - 2.0575118 - MÚ 2024 DE eng J - Journal Article
Brandts, J. - Křížek, Michal
Eight decades of Professor Karel Segeth.
Applications of Mathematics. Roč. 68, č. 3 (2023), s. 255-257. ISSN 0862-7940. E-ISSN 1572-9109
Institutional support: RVO:67985840
Keywords : Segeth Karel
OECD category: Pure mathematics
Impact factor: 0.7, year: 2022
Method of publishing: Limited access
https://doi.org/10.21136/AM.2023.0054-23
Permanent Link: https://hdl.handle.net/11104/0344975File Download Size Commentary Version Access Krizek2.pdf 0 250.9 KB Publisher’s postprint require - 3.0508906 - MÚ 2020 RIV CH eng J - Journal Article
Brandts, J. - Křížek, Michal
Duality of isosceles tetrahedra.
Journal of Geometry. Roč. 110, č. 3 (2019), č. článku 49. ISSN 0047-2468
R&D Projects: GA ČR(CZ) GA18-09628S
Institutional support: RVO:67985840
Keywords : well-centered simplices * dual simplices * isosceles tetrahedra
OECD category: Pure mathematics
Method of publishing: Limited access
http://dx.doi.org/10.1007/s00022-019-0506-y
Permanent Link: http://hdl.handle.net/11104/0299709File Download Size Commentary Version Access Krizek5.pdf 0 380.3 KB Publisher’s postprint require - 4.0489074 - MÚ 2019 RIV CZ cze J - Journal Article
Brandts, J. - Křížek, Michal
Pozoruhodné vlastnosti duálních a rovnostěnných čtyřstěnů.
[Remarkable properties of dual and isosceles tetrahedra.]
Pokroky matematiky, fyziky & astronomie. Roč. 63, č. 1 (2018), s. 41-50. ISSN 0032-2423
R&D Projects: GA ČR(CZ) GA18-09628S
Institutional support: RVO:67985840
Keywords : well-centered simplices * dual simplices * isosceles tetrahedra
OECD category: Pure mathematics
http://hdl.handle.net/10338.dmlcz/147208
Permanent Link: http://hdl.handle.net/11104/0283560File Download Size Commentary Version Access Krizek2.pdf 2 434 KB Publisher’s postprint open-access - 5.0481866 - MÚ 2018 CZ eng J - Journal Article
Brandts, J. - Křížek, Michal
Seven decades of professor Karel Segeth.
Applications of Mathematics. Roč. 58, č. 2 (2013), s. 125-128. ISSN 0862-7940. E-ISSN 1572-9109
Institutional support: RVO:67985840
Impact factor: 0.147, year: 2013
https://link.springer.com/article/10.1007/s10492-013-0006-6
Permanent Link: http://hdl.handle.net/11104/0277322File Download Size Commentary Version Access Krizek15.pdf 0 182 KB Publisher’s postprint open-access - 6.0463394 - MÚ 2017 RIV CZ eng J - Journal Article
Brandts, J. - Křížek, Michal
Factorization of cp-rank-3 completely positive matrices.
Czechoslovak Mathematical Journal. Roč. 66, č. 3 (2016), s. 955-970. ISSN 0011-4642. E-ISSN 1572-9141
R&D Projects: GA ČR GA14-02067S
Institutional support: RVO:67985840
Keywords : completely positive matrix * cp-rank * factorization
Subject RIV: BA - General Mathematics
Impact factor: 0.364, year: 2016
http://hdl.handle.net/10338.dmlcz/145882
Permanent Link: http://hdl.handle.net/11104/0262607File Download Size Commentary Version Access Krizek8.pdf 2 879.9 KB Publisher’s postprint open-access - 7.0461444 - MÚ 2017 RIV CZ eng J - Journal Article
Brandts, J. - Křížek, Michal - Zhang, Z.
Paradoxes in numerical calculations.
Neural Network World. Roč. 26, č. 3 (2016), s. 317-330. ISSN 1210-0552
R&D Projects: GA ČR GA14-02067S
Institutional support: RVO:67985840
Keywords : round-off errors * numerical instability * recurrence formulae
Subject RIV: BA - General Mathematics
Impact factor: 0.394, year: 2016
Permanent Link: http://hdl.handle.net/11104/0261037File Download Size Commentary Version Access Krizek.pdf 1 921.7 KB Publisher’s postprint require - 8.0447563 - MÚ 2016 RIV US eng J - Journal Article
Brandts, J. - Cihangir, A. - Křížek, Michal
Tight bounds on angle sums of nonobtuse simplices.
Applied Mathematics and Computation. Roč. 267, 15 September (2015), s. 397-408. ISSN 0096-3003. E-ISSN 1873-5649
R&D Projects: GA ČR GA14-02067S
Institutional support: RVO:67985840
Keywords : nonobtuse simplex * angle sums * spherical geometry * polar simplex
Subject RIV: BA - General Mathematics
Impact factor: 1.345, year: 2015
http://www.sciencedirect.com/science/article/pii/S0096300315002155
Permanent Link: http://hdl.handle.net/11104/0249376File Download Size Commentary Version Access Krizek6.pdf 6 510.6 KB Publisher’s postprint require - 9.0444826 - MÚ 2016 RIV CZ cze J - Journal Article
Brandts, J. - Cihangir, A. - Křížek, Michal
Součet úhlů ve čtyřstěnu.
[The sum of angles in a tetrahedron.]
Pokroky matematiky, fyziky & astronomie. Roč. 60, č. 2 (2015), s. 113-122. ISSN 0032-2423
R&D Projects: GA ČR GA14-02067S
Institutional support: RVO:67985840
Keywords : dihedral angle * solid angle * nonobtuse tetrahedron * optimal bounds
Subject RIV: BA - General Mathematics
http://hdl.handle.net/10338.dmlcz/144405
Permanent Link: http://hdl.handle.net/11104/0247292File Download Size Commentary Version Access krizek2.pdf 6 1.7 MB Publisher’s postprint open-access - 10.0387003 - MÚ 2013 RIV NL eng J - Journal Article
Brandts, J. - Dijkhuis, S. - de Haan, V. - Křížek, Michal
There are only two nonobtuse binary triangulations of the unit n-cube.
Computational Geometry-Theory and Applications. Roč. 46, č. 3 (2013), s. 286-297. ISSN 0925-7721. E-ISSN 1879-081X
R&D Projects: GA AV ČR(CZ) IAA100190803
Institutional support: RVO:67985840
Keywords : triangulation * simplexity * nonobtuse simplex
Subject RIV: BA - General Mathematics
Impact factor: 0.570, year: 2013
http://www.sciencedirect.com/science/article/pii/S0925772112001150#
Permanent Link: http://hdl.handle.net/11104/0217169File Download Size Commentary Version Access Krizek5.pdf 2 272.8 KB Publisher’s postprint require