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Lie symmetries of nonrelativistic and relativistic motions
(American Physical Society (APS), 2019-03-15)
Article
Open AccessWe study the Lie symmetries of non-relativistic and relativistic higher order constant motions in d spatial dimensions, i.e. constant acceleration, constant rate-of-change -of-acceleration (constant jerk), and so on. In ... -
On the k-independence number of graphs
(2019)
Article
Restricted access - publisher's policyThis paper generalizes and unifies the existing spectral bounds on the k-independence number of a graph, which is the maximum size of a set of vertices at pairwise distance greater than k. The previous bounds known in the ... -
Locating domination in bipartite graphs and their complements
(2018-01-01)
Article
Restricted access - publisher's policy -
Different reheating mechanisms in quintessence inflation
(American Physical Society (APS), 2019-02-11)
Article
Open AccessDifferent well-known ways to reheat the Universe, such as instant preheating, the creation of particles nearly or conformally coupled with gravity, or from the decay of products of a curvaton field, are revisited and ... -
Resistance distances in extended or contracted networks
(Elsevier, 2018-02-01)
Article
Open Access -
Effect of public transport strikes on air pollution levels in Barcelona (Spain)
(Elsevier, 2018)
Article
Restricted access - publisher's policyPublic transport strikes can lead to an increase of the number of private vehicle trips, which in turn can increase air pollution levels. We aimed to estimate the change in air pollution concentrations during public transport ... -
Exploring conditions and usefulness of UAVs in the BRAIN Massive Inspections Protocol
(2019-01-01)
Article
Open AccessIn this paper authors conduct a case study analysis by implementing the use of UAVs in the data collection within the BRAIN framework for the failures diagnosis of facades. The main goal is to assess the conditions and ... -
D-stratification and hierarchy graphs of the space of order 2 and 3 matrix pencils
(Universal Journal of Mathematics and Applications, 2019)
Article
Open AccessSmall changes in the entries of a matrix pencil may lead to important changes in its Kronecker normal form. Studies about the effect of small perturbations have been made when considering the stratification associated with ... -
A Koszul complex over skew polynomial rings
(2019-01-01)
Article
Restricted access - publisher's policyWe construct a Koszul complex in the category of left skew polynomial rings associated with a flat endomorphism that provides a finite free resolution of an ideal generated by a Koszul regular sequence -
Coupling symmetries with Poisson structures
(Springer, 2013)
Article
Restricted access - publisher's policyWe study local normal forms for completely integrable systems on Poisson manifolds in the presence of additional symmetries. The symmetries that we consider are encoded in actions of compact Lie groups. The existence of ... -
Secret sharing schemes for (k, n)-consecutive access structures
(Springer, 2018-09-01)
Article
Restricted access - publisher's policyWe consider access structures over a set P of n participants, defined by a parameter k with 1 = k = n in the following way: a subset is authorized if it contains participants i, i + 1,...,i + k - 1, for some i ¿ {1,...,n-k+1}. ... -
The clay public lecture and conference on the Poincaré Conjecture, Paris, 7-9 June 2010
(2010-09)
Article
Open Access
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