Departament de Matemàtiques
Col·leccions
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Altres [27]
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Articles de revista [2202]
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Capítols de llibre [127]
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Llibres [25]
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Presentacions [13]
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Reports de recerca [328]
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Working papers [13]
Enviaments recents
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La matemática pura en los cursos militares de matemáticas de Pedro Lucuce (1739-44) y de Pedro Padilla (1753-56)
(Universidad de Alcalá, 2018)
Capítol de llibre
Accés restringit per política de l'editorial -
Online matching in regular bipartite graphs with randomized adversary
(Springer, 2018-08)
Capítol de llibre
Accés restringit per política de l'editorial -
On the randic index of graphs
(2018-09-11)
Article
Accés obertFor a given graph G = (V, E), the degree mean rate of an edge uv ¿ E is a half of the quotient between the geometric and arithmetic means of its end-vertex degrees d(u) and d(v). In this note, we derive tight bounds for ... -
The spectra of lifted digraphs
(2019-01)
Article
Accés obertWe present a method to derive the complete spectrum of the lift Ga of a base digraph G, with voltage assignment a on a (finite) group G. The method is based on assigning to G a quotient-like matrix whose entries are ... -
Analysis of construction auctions data in Slovak Public Procurement
(2018-01-01)
Article
Accés obertThe requirement for efficient public spending leads contracting authorities to use electronic reverse auctions (e-RA), a tool that allows achieving financial savings. In this study, we aim to explore the relationships ... -
Mechanical oscillations in biological tissues as a result of delayed rest-length changes
(American Institute of Physics (AIP), 2018-11-26)
Article
Accés obertOscillatory behavior in tissue biology is ubiquitous and may be observed in the form of either chemical or mechanical signals. We present here and solve a mechanical cell model that exhibits oscillations emerging from ... -
Triangular sequences, combinatorial recurrences and linear difference equations
(Elsevier, 2018-10-22)
Article
Accés obertIn this work we introduce the triangular double sequences of arbitrary order given by linear recurrences, that generalize some well-known recurrences that appear in enumerative com- binatorics. ... -
Green's function in partial subdivision networks
(Taylor & Francis, 2018-07-24)
Article
Accés restringit per política de l'editorialIn the present work, we define a partial subdivision network of a given network G, by inserting a new vertex in some selected edges of G, so that each of these edges is replaced by two new edges with conductances that ... -
La coincidencia entre las notas de prensa y los breves de economía: análisis cuantitativo y cualitativo de dos periódicos españoles
(2018)
Article
Accés obertAquesta recerca té com a objectiu comparar les notes de premsa d’empreses i organismes públics i els breus publicats pels mitjans de comunicació. Amb això es pretén detectar si la nota de premsa és processada o contrastada ... -
Complete kinematic analysis of the Stewart-Gough platform by unit quaternions
(AGH University of Science and Technology Press, 2015)
Article
Accés obertIn this paper, a complete analysis of Stewart–Gough platform kinematics by unit quaternions is proposed. Even when unit quaternions have been implemented in different applications (including a kinematic analysis of the ... -
An algebraic approach to lifts of digraphs
(2018-12-07)
Article
Accés obertWe study the relationship between two key concepts in the theory of (di)graphs: the quotient digraph, and the lift Ga of a base (voltage) digraph. These techniques contract or expand a given digraph in order to study its ... -
Quina relació hi ha entre els queviures, la fotografia i l'àlgebra de matrius?
(Edicions de la Universitat de Barcelona, 2018-06-11)
Article
Accés obert
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