Results 11 to 20 of about 11,390 (166)

The number of corner polyhedra graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
Corner polyhedra were introduced by Eppstein and Mumford (2014) as the set of simply connected 3D polyhedra such that all vertices have non negative integer coordinates, edges are parallel to the coordinate axes and all vertices but one can be seen from ...
Clement Dervieux   +2 more
doaj   +1 more source

A Polyhedral Approach for a Constrained Matching Problem [PDF]

open access: yesDiscrete & Computational Geometry, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Andreas Hefner, Peter Kleinschmidt
openaire   +1 more source

Optimized Layout of Spherical Objects in a Polyhedral Domain

open access: yesКібернетика та комп'ютерні технології, 2020
Introduction. The article studies the problem of arranging spherical objects in a bounded polyhedral domain in order to maximize the packing factor. The spherical objects have variable placement parameters and variable radii within the given upper and ...
Tatyana Romanova   +3 more
doaj   +1 more source

The braid index of DNA double crossover polyhedral links.

open access: yesPLoS ONE, 2020
In this paper, the authors study the mathematical properties of a class of alternating links called polyhedral links which have been used to model DNA polyhedra.
Xiao-Sheng Cheng, Yuanan Diao
doaj   +1 more source

Box-constrained optimization for minimax supervised learning*** [PDF]

open access: yesESAIM: Proceedings and Surveys, 2021
In this paper, we present the optimization procedure for computing the discrete boxconstrained minimax classifier introduced in [1, 2]. Our approach processes discrete or beforehand discretized features.
Gilet Cyprien   +2 more
doaj   +1 more source

A Featureless Approach to 3D Polyhedral Building Modeling from Aerial Images

open access: yesSensors, 2010
This paper presents a model-based approach for reconstructing 3D polyhedral building models from aerial images. The proposed approach exploits some geometric and photometric properties resulting from the perspective projection of planar structures.
Karim Hammoudi, Fadi Dornaika
doaj   +1 more source

A Polyhedral Approach for Graph Coloring1

open access: yesElectronic Notes in Discrete Mathematics, 2001
Abstract Abstract We present an approach based on an integer programming formulation of the graph coloring problem. Our goal is to develop a model that removes some symmetrical solutions obtained by color permutations. We study the problem from a polyhedral point of view and determine some families of facets of the associated polytope.
Isabel Méndez-Díaz, Paula Zabala
openaire   +1 more source

Virtual Elements on polyhedra with a curved face

open access: yesBulletin of Mathematical Sciences, 2023
We revisit classical Virtual Element approximations on polygonal and polyhedral decompositions. We also recall the treatment proposed for dealing with decompositions into polygons with curved edges.
Franco Brezzi, L. Donatella Marini
doaj   +1 more source

State-Space Region-Invariance of Discrete-Time Control Systems

open access: yesIEEE Access, 2023
In the paper, the so-called region-invariance properties of discrete-time control systems are considered. An already known notion of positivity of control systems has been generalized (using a kind of geometric insight instead of a pure algebraic ...
Wiktor Malesza, Michal Slawomir Wiraszka
doaj   +1 more source

Influence of chromium addition and cooling rate on Kinetic and microstructural evolution in FexCr100-x Metallic Glasses [PDF]

open access: yesE3S Web of Conferences, 2023
In this study, we utilized molecular dynamics simulations with the embedded-atom approach to explore how different cooling rates and concentrations of chromium (Cr) affect the vitrification of metallic glasses (MGs) composed of a binary alloy FexCr100-x.
Assouli Soufiane   +5 more
doaj   +1 more source

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