Results 11 to 20 of about 425,585 (327)
Regular Incidence Complexes, Polytopes, and C-Groups [PDF]
arXiv, 2017 Regular incidence complexes are combinatorial incidence structures generalizing regular convex polytopes, regular complex polytopes, various types of incidence geometries, and many other highly symmetric objects.
A Pasini +37 more
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An incidence Hopf Algebra of Convex Geometries
, 2012 A lattice L is "meet-distributive" if for each element of L, the meets of the elements directly below it form a Boolean lattice. These objects are in bijection with "convex geometries", which are an abstract model of convexity. Do they give rise to an incidence Hopf algebra of convex geometries?
Fabian Latorre
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Sum-product theorems and incidence geometry
Journal of the European Mathematical Society, 2007 In this paper we prove the following theorems in incidence geometry. The main ingredients used are the subspace theorem, Balog–Szemerédi–Gowers Theorem, and Szemerédi–Trotter Theorem. We also generalize the theorems to high dimensions, extend Theorem 1 to \Bbb F_p^2 , and ...
Mei-Chu Chang, József Solymosi
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Parametric investigation of laser incidence geometry in laser-assisted milling of Inconel 718
Journal of Materials Research and TechnologyWhile laser-assisted milling machining is promising for promoting the machinability of Inconel 718, the geometrical parameters of laser beam relative to milling tool significantly influence its machining performance.
Chenwei Gao +3 more
doaj +2 more sources
FinInG: a package for Finite Incidence Geometry
, 2016 FinInG is a package for computation in Finite Incidence Geometry. It provides users with the basic tools to work in various areas of finite geometry from the realms of projective spaces to the flat lands of generalised polygons. The algebraic power of GAP is exploited, particularly in its facility with matrix and permutation groups.
John Bamberg +5 more
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EFFICIENT SPATIO-TEMPORAL MODELLING TO ENABLE TOPOLOGICAL ANALYSIS [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 Time-dependent analysis scenarios such as heat, wind or flood analysis in cities and in landscapes need a correct and consistent modelling of geometry and topology over time.
M. W. Jahn, P. Kuper, M. Breunig
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Velocity Increment on Incidence Angle near the Leading Edge of the Compressor Cascade
Aerospace, 2023 The geometry of a compressor leading edge has an important effect on the aerodynamic performance at an off-designed incidence angle. The current geometric design methods of the leading edge are usually developed based on the flow characteristics at the ...
Xiaobin Xu +3 more
doaj +1 more source
Quotients of incidence geometries [PDF]
Designs, Codes and Cryptography, 2011 We develop a theory for quotients of geometries and obtain sufficient conditions for the quotient of a geometry to be a geometry. These conditions are compared with earlier work on quotients, in particular by Pasini and Tits. We also explore geometric properties such as connectivity, firmness and transitivity conditions to determine when they are ...
Cara, Philippe +3 more
openaire +5 more sources