Results 21 to 30 of about 17,598 (258)

A geometric Littlewood-Richardson rule [PDF]

open access: yes, 2003
We describe an explicit geometric Littlewood-Richardson rule, interpreted as deforming the intersection of two Schubert varieties so that they break into Schubert varieties.
Vakil, Ravi
core   +4 more sources

A Synergistic Approach for Recovering Occlusion-Free Textured 3D Maps of Urban Facades from Heterogeneous Cartographic Data [PDF]

open access: yes, 2013
In this paper we present a practical approach for generating an occlusion-free textured 3D map of urban facades by the synergistic use of terrestrial images, 3D point clouds and area-based information.
Dornaika, Fadi   +5 more
core   +3 more sources

A note on on-line Ramsey numbers for quadrilaterals [PDF]

open access: yesOpuscula Mathematica, 2014
We consider on-line Ramsey numbers defined by a game played between two players, Builder and Painter. In each round Builder draws an the edge and Painter colors it either red or blue, as it appears.
Joanna Cyman, Tomasz Dzido
doaj   +1 more source

RANCANGAN PEMBELAJARAN BERBASIS KATA SEPAT UNTUK MEMPELAJARI SIFAT-SIFAT SEGI EMPAT

open access: yesJurnal Lebesgue, 2023
The aim of this study was to analyze the difficulties of teachers and students in teaching and learning material on the properties of quadrilateral. Based on these difficulties the researcher designed learning activities based on Kata Sepat which would ...
Rini Utami   +2 more
doaj   +1 more source

Cross Ratios of Quadrilateral Linkages [PDF]

open access: yes, 2015
We discuss the cross-ratio map of planar quadrilateral linkages, also in the case when one of the links is telescopic. Most of our results are valid for a planar quadrilateral linkage with generic lengths of the sides.
Khimshiashvili, Giorgi, Siersma, Dirk
core   +2 more sources

Vibro-impact of a plate on rigid obstacles: existence theorem, convergence of a scheme and numerical simulations [PDF]

open access: yes, 2012
The purpose of this paper is to describe a fully discrete approximation and its convergence to the continuum dynamical impact problem for the fourth-order Kirchhoff–Love plate model with nonpenetration Signorini contact condition.
Pozzolini, Cédric   +2 more
core   +4 more sources

Approximation of Quadrilaterals by Rational Quadrilaterals in the Plane

open access: yes, 2016
Many questions about triangles and quadrilaterals with rational sides, diagonals and areas can be reduced to solving certain Diophantine equations. We look at a number of such questions including the question of approximating arbitrary triangles and ...
Kumar, C. P. Anil
core   +1 more source

Development of Definitory and Classificatory Thinking in Geometry through Storytelling and GBL Activities

open access: yesEducation Sciences
Little is discussed regarding the meaning of “definition” in primary school, where children often memorize definitions. In geometry, students frequently confuse “definition” with the “description” of a geometric object. The aim of this study is to verify
Leonardo Tortorelli   +1 more
doaj   +1 more source

Hyperbolic Lambert Quadrilaterals and Quasiconformal Mappings

open access: yes, 2013
We prove sharp bounds for the product and the sum of two hyperbolic distances between the opposite sides of hyperbolic Lambert quadrilaterals in the unit disk.
Vuorinen, Matti, Wang, Gendi
core   +1 more source

A New Hyperbolic Area Formula of a Hyperbolic Triangle and Its Applications

open access: yesJournal of Mathematics, 2014
We study some characterizations of hyperbolic geometry in the Poincaré disk. We first obtain the hyperbolic area and length formula of Euclidean disk and a circle represented by its Euclidean center and radius.
Hui Bao, Xingdi Chen
doaj   +1 more source

Home - About - Disclaimer - Privacy