Zobrazeno 1 - 10
of 1 815
pro vyhledávání: '"Peña Juan"'
The property of exponential dichotomy can be seen as a generalization of the hyperbolicity condition for non autonomous linear finite dimensional systems of ordinary differential equations. In 1978 W.A. Coppel proved that the exponential dichotomy on
Externí odkaz:
http://arxiv.org/abs/2411.05765
A set of n non-collinear points in the Euclidean plane defines at least n different lines. Chen and Chv\'tal in 2008 conjectured that the same results is true in metric spaces for an adequate definition of line. More recently, it was conjectured in 2
Externí odkaz:
http://arxiv.org/abs/2410.21433
Autor:
Fernandes, Cristina G., Lintzmayer, Carla N., Peña, Juan P., Santos, Giovanne, Trujillo-Negrete, Ana, Zamora, Jose
For a digraph $D$ of order $n$ and an integer $1 \leq k \leq n-1$, the $k$-token digraph of $D$ is the graph whose vertices are all $k$-subsets of vertices of $D$ and, given two such $k$-subsets $A$ and $B$, $(A,B)$ is an arc in the $k$-token digraph
Externí odkaz:
http://arxiv.org/abs/2410.20189
Chen and Chv\'atal conjectured in 2008 that in any finite metric space either there is a line containing all the points - a universal line -, or the number of lines is at least the number of points. This is a generalization of a classical result due
Externí odkaz:
http://arxiv.org/abs/2405.19208
Autor:
Peña Juan F., Carabalí Arturo
Publikováno v:
Journal of Apicultural Science, Vol 62, Iss 1, Pp 5-14 (2018)
The objective of this research was to determine the effect of honeybee density on pollination and fruit set of the Hass avocado. The research was carried out in the municipality of Popayán, Colombia. Three avocado orchards were selected, each one wi
Externí odkaz:
https://doaj.org/article/315a3fd041884bf0ab42e6ff7e144361
The combined matrix is a very useful concept for many applications. Almost strictly sign regular (ASSR) matrices form an important structured class of matrices with two possible zero patterns, which are either type-I staircase or type-II staircase. W
Externí odkaz:
http://arxiv.org/abs/2402.10933
Autor:
Jiménez, Andrea, Knauer, Kolja, Lintzmayer, Carla Negri, Matamala, Martín, Peña, Juan Pablo, Quiroz, Daniel A., Sambinelli, Maycon, Wakabayashi, Yoshiko, Yu, Weiqiang, Zamora, José
The proper conflict-free chromatic number, $\chi_{pcf}(G)$, of a graph $G$ is the least $k$ such that $G$ has a proper $k$-coloring in which for each non-isolated vertex there is a color appearing exactly once among its neighbors. The proper odd chro
Externí odkaz:
http://arxiv.org/abs/2308.00170