Zobrazeno 1 - 10 of 10 pro vyhledávání: '"Reinaldo E. Giudici"'
1
On cycles in the sequence of unitary Cayley graphs
Autor: Reinaldo E. Giudici, Pedro Berrizbeitia
Publikováno v: Discrete Mathematics. 282:239-243
For n∈N let pk(n) be the number of induced k-cycles in the Cayley graph Cay (Zn,Un), where Zn is the ring of integers modn and Un=Zn∗ is the group of units modn. Our main result is: Given r∈N there is a number m(r), depending only on r, with rl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::decb5cab412aacadd4889460a75df676
https://doi.org/10.1016/j.disc.2003.11.013
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2
Quadratic modulo 2n Cayley graphs
Autor: Aurora Olivieri, Reinaldo E. Giudici
Publikováno v: Discrete Mathematics. 215(1-3):73-79
A family of simple, nite, undirected and without loops Cayley graphs Cay(Z2n;QR(2 n )) is studied, where Z2n denotes the additive group of integers modulo 2 n and the set S =S [ f Sg, where S =QR(2 n ) denotes the set of quadratic residues of Z2n, ze
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::193d66e8d0b6c4ab0ebb7283bd42f4b8
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3
Counting pure k cycles in sequences of Cayley graphs
Autor: Pedro Berrizbeitia, Reinaldo E. Giudici
Publikováno v: Discrete Mathematics. 149:11-18
For each positive integer n we consider sequences Xn of Cayley graph Cay(Gn, Sn), where Gn is a finite abelian group and Sn is a symmetric subset of Gn. The sequence Xn has the multiplicative arithmetic property (map) if for each pair of positive rel
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c8baeda1dd253e9d400c29fab18423a
https://doi.org/10.1016/0012-365x(94)00295-t
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4
On the chromatic uniquenes of bipartite graphs
Autor: M A López, P M Salzberg, Reinaldo E. Giudici
Publikováno v: Discrete Mathematics. 58(3):285-294
We prove the chromatic uniqueness of the following infinite families of bipartite graphs: K m,m + k , K r ∪ K m,m + k with m ⩾ 2 and 0⩽ max (5, √2m). We have also proved that K m,m + k , K r υ K m,m + k are chromatically unique for k = 0,1 a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f28c25f9fd0a92de751172d3e9bbc138
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5
A university basic course on mathematics: MAT‐100
Autor: Reinaldo E. Giudici
Publikováno v: International Journal of Mathematical Education in Science and Technology. 12:603-608
Simon Bolivar University has been experimenting for the past three years with a new concept in the teaching of Traditional Calculus, a method of open studies that puts more emphasis on learning than on being taught. This achieves an independent way o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90cbff2e21ba743ecf8efbe6a4b2bf28
https://doi.org/10.1080/0020739810120513
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7
On the evaluation of Brewer’s character sums
Autor: Reinaldo E. Giudici, Stanley F. Robinson, Joseph B. Muskat
Publikováno v: Transactions of the American Mathematical Society. 171:317-347
A decade ago in this journal B. W. Brewer defined a sequence of polynomials V n ( x , 1 ) {V_n}(x,1) and for n = 4 n = 4 and 5 evaluated \[ ∑ x = 1 p χ ( V n ( x , 1 ) ) , \sum \limits _{x = 1}^p {{}_\chi ({V_n}(x,1))}, \] χ \chi the nonprincipal
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::238fe61453518db299d17d809df7c23d
https://doi.org/10.1090/s0002-9947-1972-0306122-5
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