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Optimal packings for filled rings of circles

Dinesh B. EkanayakeManjula Mahesh RanpatidewageDouglas J. LaFountain — 2020

Applications of Mathematics

General circle packings are arrangements of circles on a given surface such that no two circles overlap except at tangent points. In this paper, we examine the optimal arrangement of circles centered on concentric annuli, in what we term rings. Our motivation for this is two-fold: first, certain industrial applications of circle packing naturally allow for filled rings of circles; second, any packing of circles within a circle admits a ring structure if one allows for irregular spacing of circles...

Finite convergence into a convex polytope via facet reflections

Dinesh B. EkanayakeDouglas J. LaFountainBoris Petracovici — 2023

Applications of Mathematics

The problem of utilizing facet reflections to bring a point outside of a convex polytope to inside has not been studied explicitly in the literature. Here we introduce two algorithms that complete the task in finite iterations. The first algorithm generates multiple solutions on the plane, and can be readily utilized in creating games on a plane or as a level generation method for video games. The second algorithm is a new efficient way to bring infeasible starting points of an optimization problem...

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