The main result is a proof that the gvector of a simplicial complex with a convex ear decomposition is an Mvector. This is a generalization of similar results for matroid complexes. We also show that a finite building has a convex ear…
Papers in Discrete Mathematics
Discrete Mathematics papers in Mathematics, G
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in Discrete Mathematics, G


The first monograph of the gall wasps (Hymenoptera: Cynipoidea, Cynipidae) of the fauna of Ukraine. Thc general part contains a bricf introduction to the morphology of adults and premature Stages,. biology and ecology, phylogcny and evolution of…

A passage from the Talmud whose explanation eluded commentators for two millennia is elucidated with the aid of principles suggested by modern mathematical Theory of Games.

We consider the problem of Internet switching, where traffic is generated by selfish users. We study a packetized (TCPlike) traffic model, which is more accurate than the widely used fluid model. We assume that routers have FirstInFirstOut…

Thin films of Tellurium dioxide (TeO2) were investigated for γradiation dosimetry purposes. Samples were fabricated using thin film vapour deposition technique. Thin films of TeO2 were exposed to a 60Co γradiation source at a dose rate of 6 Gy/min…

Calf strains are common injuries seen in primary care and sports medicine clinics. Differentiating strains of the gastrocnemius or soleus is important for treatment and prognosis. Simple clinical testing can assist in diagnosis and is aided by…

We browsers support secure online transactions, and provide visual feedback mechanisms to inform the user about security. These mechanisms have had little evaluation to determine how easily they are noticed and how effectively they are used. This…

V. V. Kljuev and N. I. Kokovkinv Sv cerbak v Z. Vyv cisl. Mat. i Mat. Fiz. 5 (1965), 21膒33; ; English translation, Tech. Rep. No. CS 24, Comput. Sci. Dept., Stanford Univ., Stanford, Calif., 1965 have proved that, if one restricts oneself to…

Cells are dynamical systems of biomolecular interactions that process information from their environment to mount diverse yet specific responses. A key property of many selforganized systems is that of criticality: a state of a system in which, on…

BACKGROUND: The size distribution of gene families in a broad range of genomes is well approximated by a generalized Pareto function. Evolution of ensembles of gene families can be described with Birth, Death, and Innovation Models (BDIMs). Analysis…

The field of phylogenetics is entering a new era in which trees of historical relationships between species are increasingly inferred from multilocus and genomic data. A major challenge for incorporating such large amounts of data into inference of…

BACKGROUND: Electronic clinical decision support (CDS) is increasingly establishing its role in evidencebased clinical practice. Considerable evidence supports its enhancement of efficiency in ePrescribing, but some controversy remains. This study…

A new definition of the transition matrix for a general 2D system model with variable coefficients is presented. The genera1 response formula for the general 2D system model with variable coefficients is derived. Solution to the first and the…

In this paper we discuss general tridiagonal matrix models which are natural extensions of the ones given by Dumitriu and Edelman. We prove here the convergence of the distribution of the eigenvalues and compute the limiting distributions in some…

Kochen and Specker's theorem can be seen as a consequence of Gleason's theorem and logical compactness. Similar compactness arguments lead to stronger results about finite sets of rays in Hilbert space, which we also prove by a direct construction.…

In this paper we present an easy computation of a generalized form of barycentric coordinates for irregular, convex nsided polygons. Triangular barycentric coordinates have had many classical applications in computer graphics, from texture mapping…

Recently, the concept of minimal cut sets has been introduced for studying structural fragility and identifying knockout strategies in biochemical reaction networks. A minimal cut set (MCS) has been defined as a minimal set of reactions whose…

Certain families of combinatorial objects admit recursive descriptions in terms of generating trees: each node of the tree corresponds to an object, and the branch leading to the node encodes the choices made in the construction of the object.…

The goal of this study was to propose novel cyberlearning resourcebased scientific referential metadata for an assortment of publications and scientific topics, in order to enhance the learning experiences of students and scholars in a…

The intracellular activity of the p53 tumor suppressor protein is regulated through a feedback loop involving its transcriptional target, mdm2. We present a simple mathematical model suggesting that, under certain circumstances, oscillations in p53…
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