Results 11 to 20 of about 78,659 (333)

Yet another Poincaré Polyhedron Theorem [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2011
AbstractPoincaré's Polyhedron Theorem is a widely known valuable tool in constructing manifolds endowed with a prescribed geometric structure. It is one of the few criteria providing discreteness of groups of isometries. This work contains a version of Poincaré's Polyhedron Theorem that is applicable to constructing fibre bundles over surfaces and also
Anan'in, S., Grossi, C.
openaire   +4 more sources

The Ecclesiology of Pope Francis: A Critical Analysis of the Metaphor of the Church as Polyhedron [PDF]

open access: yesBogoslovni Vestnik, 2023
Pope Francis focuses on essential topics for the Church and society in his pontificate. To describe the relationships between different social subjects, he often uses the metaphor of the polyhedron to highlight the importance of each individual and each
Željko Tanjić, Zoran Turza
doaj   +1 more source

Topological n-cells and Hilbert cubes in inverse limits

open access: yesApplied General Topology, 2018
It has been shown by S. Mardešić that if a compact metrizable space X has dim X ≥ 1 and X is the inverse limit of an inverse sequence of compact triangulated polyhedra with simplicial bonding maps, then X must contain an arc.  We are going  to prove that 
Leonard R. Rubin
doaj   +1 more source

Finding the Largest Volume Parallelepipedon of Arbitrary Orientation in a Solid

open access: yesIEEE Access, 2021
3D Computer Vision algorithms are a subject of research and application for several industrial processes. The Volume of Interest (VOI) usually refer to sub-objects with basic shapes for computing these algorithms.
Ruben Molano   +7 more
doaj   +1 more source

Algebraic vertices of non-convex polyhedra [PDF]

open access: yes, 2017
In this article we define an algebraic vertex of a generalized polyhedron and show that it is the smallest set of points needed to define the polyhedron.
Akopyan, Arseniy   +2 more
core   +2 more sources

LEARNING PROCESS OF POLYHEDRON USING COLLABORATIVE LEARNING THROUGH LSLC

open access: yesAksioma: Jurnal Program Studi Pendidikan Matematika, 2023
The difficulty of learning to build polyhedron for middle students makes experts lecturers collaboratively create learning trajectories through the Lesson Study for Learning Community (LSLC).
Rahmi Rahmi   +4 more
doaj   +1 more source

The Polyhedron-Hitting Problem [PDF]

open access: yes, 2014
We consider polyhedral versions of Kannan and Lipton's Orbit Problem (STOC '80 and JACM '86)---determining whether a target polyhedron V may be reached from a starting point x under repeated applications of a linear transformation A in an ambient vector ...
Chonev, Ventsislav   +2 more
core   +2 more sources

MAIN DIRECTIONS IN GEOMETRIC SHAPING OF REGULAR DISCRETE STRUCTURES IN DESIGN

open access: yesАрхитектон, 2021
The article expands on some important aspects in the geometric shaping of regular discrete structures in different areas of design and architecture and outlines main promising directions for their development.
Korotich Andrey V.
doaj   +1 more source

Multi-criteria comparison of 220 kV switchgears which have different circuits of electrical connections [PDF]

open access: yesE3S Web of Conferences, 2023
The paper compares different open 220 kV switchgears in the context of a new complex solution offered by the author. The solution is a polyhedron circuit topology switchgear with novel scheme and arrangement approaches.
Grinev Nikolai
doaj   +1 more source

Vertex-Unfoldings of Simplicial Polyhedra [PDF]

open access: yes, 2001
We present two algorithms for unfolding the surface of any polyhedron, all of whose faces are triangles, to a nonoverlapping, connected planar layout. The surface is cut only along polyhedron edges. The layout is connected, but it may have a disconnected
Demaine, Erik D.   +4 more
core   +5 more sources

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