Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Peteris Daugulis"'
Autor:
Peteris Daugulis
Publikováno v:
Electronic Journal of Graph Theory and Applications, Vol 8, Iss 2, Pp 211-216 (2020)
The article deals with the problem of finding vertex-minimal graphs with a given automorphism group. We exhibit two undirected 16-vertex graphs having automorphism groups A4 and A5. It improves Babai's bound for A4 and the graphical regular represent
Externí odkaz:
https://doaj.org/article/e1c763e9227f4f6bbb64982e343e14d5
The problem of choosing appropriate values for missing data is often encountered in the data science. We describe a novel method containing both traditional mathematics and machine learning elements for prediction (imputation) of missing data. This m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f265fa6ebbacfdd6b87bf28db205d162
http://hdl.handle.net/1942/37254
http://hdl.handle.net/1942/37254
Autor:
Anita Sondore, Peteris Daugulis
Publikováno v:
Rural Environment. Education. Personality (REEP).
Visualization and mappings of mathematical data and transformations to geometric objects are important tools in any area of mathematics. Directed graphs have been used in linear algebra since D. König in the early 20th century. In this paper, we aim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24e119159a8c557aee4211bf1a5d73e3
https://doi.org/10.22616/reep.2021.14.007
https://doi.org/10.22616/reep.2021.14.007
Autor:
Peteris Daugulis
Publikováno v:
Baltic Journal of Modern Computing. 8
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee63e410044cced665b80ff51963502f
https://doi.org/10.22364/bjmc.2020.8.2.01
https://doi.org/10.22364/bjmc.2020.8.2.01
Autor:
Peteris Daugulis
Publikováno v:
JP Journal of Algebra, Number Theory and Applications. 40:1029-1042
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c92741d026fa738f618932e1b7956e7a
https://doi.org/10.17654/nt040061029
https://doi.org/10.17654/nt040061029
Autor:
Anita Sondore, Peteris Daugulis
Publikováno v:
PRIMUS. 28:90-95
Efficient visualizations of computational algorithms are important tools for students, educators, and researchers. In this article, we point out an innovative visualization technique for matrix mul...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42dee86b6f4518e578ed61052da5b7e9
https://doi.org/10.1080/10511970.2017.1313344
https://doi.org/10.1080/10511970.2017.1313344
Autor:
Peteris Daugulis
Publikováno v:
Archivum Mathematicum. :13-18
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5451a3c36464affe0a9a6521d8aaadcc
https://doi.org/10.5817/am2017-1-13
https://doi.org/10.5817/am2017-1-13
Autor:
Peteris Daugulis
Publikováno v:
Networks. 59:261-264
Eigenvector centrality is a linear algebra based graph invariant used in various rating systems such as webpage ratings for search engines. A generalization of the eigenvector centrality invariant is defined which is motivated by the need to design r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ace046f22c98951740b28e5c2a6bc474
https://doi.org/10.1002/net.20442
https://doi.org/10.1002/net.20442
Publikováno v:
Discrete and Continuous Dynamical Systems - Series B. 4:29-38
In this paper we present several ODE systems encoding the most essential observations and assumptions about the complex hierarchical inter- active processes of tumor neo-vascularization (angiogenesis). From experi- mental results we infer that a sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bb57c58b90af82487de8fed6bef9fba
https://doi.org/10.3934/dcdsb.2004.4.29
https://doi.org/10.3934/dcdsb.2004.4.29
Autor:
Peteris Daugulis
The problem of finding a canonical form of complex matrices up to conjugacy with the set of canonical matrices being a union of affine planes in the matrix space is considered. A solution of the problem is given producing a new canonical form for mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15cd42e097f198bbd87c85573acf5d13