Search Results - "Pavlíková, Soňa"

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  1. 1

    Characters of twisted fractional linear groups by Pavlíková, Soňa, Širáň, Jozef

    Published in Communications in algebra (02-09-2022)
    “…We determine character tables for twisted fractional linear groups that form the "other" family in Zassenhaus' classification of finite sharply 3-transitive…”
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    Journal Article
  2. 2

    Extreme and statistical properties of eigenvalue indices of simple connected graphs by Pavlíková, Soňa, Ševčovič, Daniel, Širáň, Jozef

    Published in Discrete mathematics (01-08-2024)
    “…We analyze graphs attaining the extreme values of various spectral indices in the class of all simple connected graphs, as well as in the class of graphs which…”
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    Journal Article
  3. 3

    On a construction of integrally invertible graphs and their spectral properties by Pavlíková, Soňa, Ševčovič, Daniel

    Published in Linear algebra and its applications (01-11-2017)
    “…Godsil (1985) defined a graph to be invertible if it has a non-singular adjacency matrix whose inverse is diagonally similar to a nonnegative integral matrix;…”
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    Journal Article
  4. 4

    Enumeration of regular maps of given type on twisted linear fractional groups by Mačaj, Martin, Pavlíková, Soňa, Širáň, Jozef

    “…We enumerate orientably regular maps of any given type with automorphism group isomorphic to a twisted linear fractional group; these groups form the ‘other’…”
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    Journal Article
  5. 5

    Orientable and non-orientable regular maps with given exponent group by Asciak, Kirstie, Conder, Marston D.E., Pavlíková, Soňa, Širáň, Jozef

    Published in Journal of algebra (15-04-2023)
    “…With the help of the parallel product (also known as the join) of maps given by subgroups of triangle groups, and some facts about automorphisms of products of…”
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    Journal Article
  6. 6

    On the Moore-Penrose pseudo-inversion of block symmetric matrices and its application in the graph theory by Pavlíková, Soňa, Ševčovič, Daniel

    Published in Linear algebra and its applications (15-09-2023)
    “…The purpose of this paper is to analyze the Moore-Penrose pseudo-inversion of symmetric real matrices with application in the graph theory. We introduce a…”
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    Journal Article
  7. 7
  8. 8

    Gsim - Software for simulation in electronics by Peter, Fabo, Soňa, Pavliková

    “…This paper presents a few examples of the possibility of effective use of open-source simulation tools within the project gsim to solve the problems of the…”
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    Conference Proceeding
  9. 9

    Characters of twisted fractional linear groups by Pavlíková, Soňa, Širáň, Jozef

    Published 27-09-2020
    “…We determine character tables for twisted fractional linear groups that form the `other' family in Zassenhaus' classification of finite sharply 3-transitive…”
    Get full text
    Journal Article
  10. 10

    Inverting non-invertible trees by Pavlíková, Soňa, Širáň, Jozef

    Published 30-12-2017
    “…If a graph has a non-singular adjacency matrix, then one may use the inverse matrix to define a (labeled) graph that may be considered to be the inverse graph…”
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    Journal Article
  11. 11

    Inversed Matrixes in Electric Circuits Parameters Estimation by Oriented Graphs by Sona Pavlikova, Dusan Maga, Boris Simak

    “…The base of electric circuit analysis is often set up on numerical methods. When taking a look into the principle of any numerical method, a matrix calculus…”
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    Journal Article
  12. 12

    Qualitative, statistical and extreme properties of spectral indices of signable pseudo-invertible graphs by Pavlikova, Sona, Sevcovic, Daniel

    Published 07-03-2024
    “…In this paper, we investigate the Moore-Penrose inversion of a simple connected graph. We analyze qualitative, statistical, and extreme properties of spectral…”
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    Journal Article
  13. 13

    On the Moore-Penrose pseudo-inversion of block symmetric matrices and its application in the graph theory by Pavlikova, Sona, Sevcovic, Daniel

    Published 23-07-2022
    “…The purpose of this paper is to analyze the Moore-Penrose pseudo-inversion of symmetric real matrices with application in the graph theory. We introduce a…”
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    Journal Article
  14. 14

    Orientably-regular embeddings of complete multigraphs by Gyurki, Stefan, Pavlikova, Sona, Siran, Jozef

    Published 16-11-2023
    “…An embedding of a graph on an orientable surface is orientably-regular (or rotary, in an equivalent terminology) if the group of orientation-preserving…”
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    Journal Article
  15. 15

    Extreme and statistical properties of eigenvalue indices of simple connected graphs by Pavlikova, Sona, Sevcovic, Daniel, Siran, Jozef

    Published 12-06-2023
    “…We analyze graphs attaining the extreme values of various spectral indices in the class of all simple connected graphs, as well as in the class of graphs which…”
    Get full text
    Journal Article
  16. 16

    On Construction of Upper and Lower Bounds for the HOMO-LUMO Spectral Gap by Pavlikova, Sona, Sevcovic, Daniel

    Published 03-06-2018
    “…Numerical Algebra, Control and Optimization, 9(1) 2019, 53-69 In this paper we study spectral properties of graphs which are constructed from two given…”
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    Journal Article
  17. 17

    On a Construction of Integrally Invertible Graphs and their Spectral Properties by Pavlikova, Sona, Sevcovic, Daniel

    Published 05-07-2017
    “…Linear Algebra and its Applications, 532 (2017), 512-533 Godsil (1985) defined a graph to be invertible if it has a non-singular adjacency matrix whose inverse…”
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    Journal Article
  18. 18

    Invertibility of graphs with a unique perfect matching by Pavlikova, Sona, Sevcovic, Daniel

    Published 07-12-2016
    “…In this paper we investigate invertibility of graphs with a unique perfect matching, i.e. graphs having a unique 1-factor. We recall the new notion of the…”
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    Journal Article
  19. 19

    Maximization of the Spectral Gap for Chemical Graphs by means of a Solution to a Mixed Integer Semidefinite Program by Pavlikova, Sona, Sevcovic, Daniel

    Published 21-11-2016
    “…In this paper we analyze the spectral gap of a weighted graph which is the difference between the smallest positive and largest negative eigenvalue of its…”
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    Journal Article
  20. 20

    Methods of temperature estimation on given area in system of data collection by Juraj, D., Sona, P., Gabriel, G.

    Published in 14th International Conference Mechatronika (01-06-2011)
    “…In the system of temperature data collection, the measured data with their position are continuously stored in database. The placements of these sensors are in…”
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    Conference Proceeding