<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-09-22T08:09:33Z</responseDate><request verb="GetRecord" identifier="oai:ruor.uottawa.ca:10393/8455" metadataPrefix="oai_dc">https://ruor.uottawa.ca/server/oai/request</request><GetRecord><record><header><identifier>oai:ruor.uottawa.ca:10393/8455</identifier><datestamp>2024-02-23T08:56:13Z</datestamp><setSpec>com_10393_242</setSpec><setSpec>col_10393_244</setSpec></header><metadata><oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
   <dc:title>Illuminating triangles, quadrilaterals and convex polygons with vertex floodlights.</dc:title>
   <dc:creator>Fraiji, Nicolas.</dc:creator>
   <dc:contributor>Urrutia, Jorge,</dc:contributor>
   <dc:subject>Computer Science.</dc:subject>
   <dc:description>This work presents the solution to three problems in Computational Geometry. First we introduce a theorem to illuminate every triangle with three   p6  vertex-floodlights and we provide three proofs. Secondly we show that three   p4  vertex-floodlights suffice to illuminate every quadrilateral. Finally we provide a theorem for illuminating a cocircular convex n-gon  P of n vertices with a set of k vertex-floodlights, (k &amp;amp;le; n) whose total sum is pi.</dc:description>
   <dc:date>2009-03-23T17:25:29Z</dc:date>
   <dc:date>2009-03-23T17:25:29Z</dc:date>
   <dc:date>1999</dc:date>
   <dc:date>1999</dc:date>
   <dc:type>Thesis</dc:type>
   <dc:identifier>Source: Masters Abstracts International, Volume: 40-06, page: 1545.</dc:identifier>
   <dc:identifier>9780612678224</dc:identifier>
   <dc:identifier>http://hdl.handle.net/10393/8455</dc:identifier>
   <dc:identifier>http://dx.doi.org/10.20381/ruor-7318</dc:identifier>
   <dc:format>126 p.</dc:format>
   <dc:format>application/pdf</dc:format>
   <dc:publisher>University of Ottawa (Canada)</dc:publisher>
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