(Enter summary)
Abstract: We show that in the worst
case,\Omega\Gamma
n
dd=2e\Gamma1
+n log n) sidedness
queries are required to determine whether the convex
hull of n points in IR
d
is simplicial, or to determine the number
of convex hull facets. This lower bound matches known
upper bounds in any odd dimension. Our result follows from
a straightforward and completely constructive adversary argument.
A key step in the proof is the construction of a
quasi-simplicial n-vertex polytope
with\Omega\Gamma
n... (Update)
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J. Erickson. New lower bounds for convex hull problems in odd dimensions. In Proc. 12th Ann. ACM Symp. Comput. Geom., pages 1--9, 1996. http://citeseer.ist.psu.edu/article/erickson96new.html More
@inproceedings{ erickson96new,
author = "Jeff Erickson",
title = "New Lower Bounds for Convex Hull Problems in Odd Dimensions",
booktitle = "Symposium on Computational Geometry",
pages = "1-9",
year = "1996",
url = "citeseer.ist.psu.edu/article/erickson96new.html" }
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New Lower Bounds for Convex Hull Problems in Odd Dimensions - Erickson (1996)
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New Lower Bounds for Convex Hull Problems in Odd Dimensions - Erickson (1996)
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