Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Harald Gropp"'
Autor:
Klaus-Dieter Herbst
Publikováno v:
Erhard Weigel (1625-1699) und die Wissenschaften
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffa1ade5be3067d9e632a9223c928de5
https://doi.org/10.3726/978-3-653-02154-7/11
https://doi.org/10.3726/978-3-653-02154-7/11
Autor:
Harald Gropp
Publikováno v:
Philosophie, Naturwissenschaft und Technik ISBN: 9783732991464
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8cb200350e4a350694c09c51a077b3e5
https://doi.org/10.57088/978-3-7329-9146-4_21
https://doi.org/10.57088/978-3-7329-9146-4_21
Autor:
Harald Gropp
Publikováno v:
Exkursionen in die Geschichte der Mathematik und ihres Unterrichts
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fecc770faf5e3c26e247a2b413c0a5c9
https://doi.org/10.37626/ga9783959871860.0.15
https://doi.org/10.37626/ga9783959871860.0.15
Autor:
Harald Gropp
Publikováno v:
Electronic Notes in Discrete Mathematics. 24:81-88
It happened in the same year (1856) that T.P. Kirkman and W.R. Hamilton discussed problems of closed circuits in graphs. This paper reports on contributions in the 80 years which followed until the first book on graph theory was written by D. Konig i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38dcf6c9a75cbeb69017108309f1068c
https://doi.org/10.1016/j.endm.2006.06.014
https://doi.org/10.1016/j.endm.2006.06.014
Autor:
Harald Gropp
Publikováno v:
Electronic Notes in Discrete Mathematics. 22:487-490
For k = 4 it is conjectured that all configurations ( v r , b k ) exist for which the obvious necessary conditions hold. These configurations are equivalent to certain linear regular 4-uniform hypergraphs. Colouring of a configuration means to colour
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02ef3690265fb83c67ac9538abc6e2c0
https://doi.org/10.1016/j.endm.2005.06.095
https://doi.org/10.1016/j.endm.2005.06.095
Autor:
Harald Gropp
Publikováno v:
CTW
In this paper a nonexistence theorem of Schutzenberger of 1949 for symmetric designs is discussed.This result together with the theorems of Bruck-Ryser and Chowla-Ryser yield many nonexistence results for orbital matrices as well. In the second part,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae5513cd1322009c4731dac4817ec6f3
https://doi.org/10.1016/j.endm.2004.03.036
https://doi.org/10.1016/j.endm.2004.03.036
Autor:
Harald Gropp
Publikováno v:
Discrete Mathematics. 276(1-3):219-227
The early research on regular graphs of the French mathematician Georges Brunel (1856–1900) is discussed. Brunel developed early graph terminology and started the French “applied” approach towards graph theory.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::630e3095e2e0db04ee4584b3ce63676f
Autor:
Harald Gropp
Publikováno v:
Electronic Notes in Discrete Mathematics. 13:57-60
An ( r , 1)-design is a linear space (i.e. a finite incidence structure in which through 2 different points there is exactly one line and where every line contains at least 2 points) where through every point there are exactly r lines. In this paper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6be8f209a5c77ec26c4214edf64da9ed
https://doi.org/10.1016/s1571-0653(04)00438-x
https://doi.org/10.1016/s1571-0653(04)00438-x
Autor:
Harald Gropp
Publikováno v:
Electronic Notes in Discrete Mathematics. 8:42-45
The existence problem for nonsymmetric configurations with line size k = 4 will be discussed. It is conjectured that the obviously necessary existence conditions are also sufficient. New construction methods are discussed. The smallest unsettled case
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db6e21de43dff837ca2653e7078b7cae
https://doi.org/10.1016/s1571-0653(05)80075-7
https://doi.org/10.1016/s1571-0653(05)80075-7
Autor:
Harald Gropp
Publikováno v:
Electronic Notes in Discrete Mathematics. 5:145-148
The early research on regular graphs of the two French mathematicians Georges Brunei (1856-1900) and Andre Sainte-Lague (1882-1950) is discussed. Brunei developed early graph terminology and started the French “applied” approach towards graph the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e044d205d6bc659f850e1037f86355f6
https://doi.org/10.1016/s1571-0653(05)80147-7
https://doi.org/10.1016/s1571-0653(05)80147-7