A procedure for computing the symmetric difference of regions defined by polygonal curves

A procedure for computing the symmetric difference of regions defined by polygonal curves

Given any two regions A, B in the plane, defined by polygonal (simple, closed and oriented) curves, associated with their respective boundaries, we describe a procedure to compute the symmetric difference A⊕B. The output is also presented in the form of polygonal curves, where in particular the curves describing the union A∪B, the intersection A∩B, the difference A\B, and the complement of the ...

study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

Computing the Detour of Polygonal Curves

Difference Equations and Symmetric Polynomials Defined by Their Zeros

In this paper, we are starting a systematic analysis of a class of symmetric polynomials which, in full generality,was introduced in [Sa]. The main features of these functions are that they are defined by vanishing conditions and that they are nonhomogeneous. They depend on several parameters, but we are studying mainly a certain subfamily which is indexed by one parameter, r. As a special case...

Computing the Fréchet distance between two polygonal curves

Computing the Fréchet distance between two polygonal curves H Alt, M Godau International Journal of Computational Geometry & ..., 1995 World Scientific As a measure for the resemblance of curves in arbitrary dimensions we consider the socalled Fréchet-distance, which is compatible with parametrizations of the curves. For polygonal chains P and Q consisting of p and q edges an algorithm of runti...