Zobrazeno 1 - 10
of 463
pro vyhledávání: '"Transversal (geometry)"'
Autor:
Eddy Godelle
Publikováno v:
Journal of Algebra. 607:290-304
We consider Artin-Tits groups of FC type and prove the two following results. If any two distinct elements of a standard parabolic subgroup are conjugated by a standard generator of the whole group, then this generator has to be in the subgroup. We a
Autor:
Anders Yeo, Michael A. Henning
Publikováno v:
Henning, M A & Yeo, A 2021, ' Lower bounds on Tuza constants for transversals in linear uniform hypergraphs ', Discrete Applied mathematics, vol. 304, pp. 12-22 . https://doi.org/10.1016/j.dam.2021.07.004
Let H be a hypergraph of order n H = | V ( H ) | and size m H = | E ( H ) | . The transversal number τ ( H ) of H is the minimum number of vertices that intersect every edge of H . A linear hypergraph is one in which every two distinct edges interse
Autor:
Anders Yeo, Michael A. Henning
Publikováno v:
Henning, M A & Yeo, A 2021, ' A new upper bound on the total domination number in graphs with minimum degree six ', Discrete Applied mathematics, vol. 302, pp. 1-7 . https://doi.org/10.1016/j.dam.2021.05.033
A total dominating set in a graph G is a set of vertices of G such that every vertex is adjacent to a vertex of the set. The total domination number γ t ( G ) is the minimum cardinality of a dominating set in G . Thomasse and Yeo (2007) conjectured
Autor:
Juan Gutiérrez
Publikováno v:
Journal of Graph Theory. 98:589-603
Let $lct(G)$ be the minimum cardinality of a set of vertices that intersects every longest cycle of a 2-connected graph $G$. We show that $lct(G)\leq k-1$ if $G$ is a partial $k$-tree and that $lct(G)\leq \max \{1, {\omega(G){-}3}\}$ if $G$ is chorda
Autor:
T. N. Sannikova
Publikováno v:
Astronomy Reports. 65:312-321
A mean-element differential equation system is solved analytically in the first approximation in a small parameter to investigate the orbital evolution of an asteroid moving under the attraction of the Sun and additional perturbing acceleration $${\m
Autor:
Sergey Uvarov, Vasiliy Chudinov
Publikováno v:
Procedia Structural Integrity. 33:465-468
Cubic shaped specimens with different angles between layer orientation and loading surface were tested quasistatically and dynamically. We found, that shear strength is slightly dependent on the compression load when the angle between layer orientati
Publikováno v:
IEEE Transactions on Vehicular Technology. 69:10375-10379
A transversal coordinate frame based on a reference ellipsoid is proposed to solve problems associated with strapdown inertial navigation systems (SINSs) in polar regions. However, a commercial-grade SINS can still suffer from cumulative errors even
Publikováno v:
Theoretical Computer Science. 815:1-10
We study the problem, given a hypergraph H , how to generate its transversal (or dual) hypergraph G , using tools from Boolean resolution. We show how to compute the residual dual of H given a subset E of its minimal transversals. This is the hypergr
Publikováno v:
Astronomy Reports. 64:369-373
The averaging method is widely used in celestial mechanics, in which a mean orbit is introduced and slightly deviates from an osculating one, as long as disturbing forces are small. The difference $$\delta {\mathbf{r}}$$ in the celestial body positio
Autor:
Giovana Xavier Pinto, Alfredo Bonini Neto, Luís Roberto Almeida Gabriel Filho, Camila Pires Cremasco, Juliana Edwiges Martinez Spada, Paulo Roberto de Lima Gianfelice, Jhonatan Cabrera Piazentin
Publikováno v:
International Journal for Innovation Education and Research. 8:26-37
O excesso de massa corporal predominantemente na região abdominal do corpo favorece o surgimento de várias doenças, dentre elas as dislipidemias e os distúrbios cardiovasculares. Nesse contexto, o índice de conicidade (IC) é uma alternativa vi