<?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>2026-09-19T07:29:23Z</responseDate><request verb="GetRecord" identifier="oai:skemman.is:1946/29902" metadataPrefix="dim">https://skemman.is/oai/request</request><GetRecord><record><header><identifier>oai:skemman.is:1946/29902</identifier><datestamp>2019-08-30T07:52:26Z</datestamp><setSpec>com_1946_6870</setSpec><setSpec>com_1946_6001</setSpec><setSpec>col_1946_34329</setSpec></header><metadata><dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd">
<dim:field mdschema="dc" element="contributor" lang="is">Háskólinn í Reykjavík</dim:field>
<dim:field mdschema="dc" element="contributor" qualifier="author">Tómas Ken Magnússon 1992-</dim:field>
<dim:field mdschema="dc" element="description" qualifier="advisor">Henning Arnór Úlfarsson 1981-</dim:field>
<dim:field mdschema="dc" element="description" qualifier="abstract" lang="is">Þessi ritgerð kynnir hugmyndina um nauðung á umraðanamynstur. Eftir að undirstöðukenningar um nauðungarmynstur hafa verið settar fram eru þessi mynstur notuð í samtilfellisflokkun á möskvamynstrum. Að lokum eru kynntar nýjar aðferðir sem nýta nauðungarmynstur í talningum á umraðanaflokkum. Þessar sjálfvirku aðferðir eru framkvæmdar á umraðanaflokka sem forðast mynstur af lengd fjórum sem í nokkrum tilvikum var eingöngu áður hægt að telja með sértækum aðferðum.</dim:field>
<dim:field mdschema="dc" element="description" qualifier="abstract" lang="is">This thesis introduces the notion of a force on a permutation pattern. After developing the necessary theory, forced patterns are applied to the coincidence classification of mesh patterns, completing the classification up to length three. Then forced patterns are shown to give a new method for enumerating permutation classes, allowing automatic enumeration of several cases previously only done by ad-hoc methods.</dim:field>
<dim:field mdschema="dc" element="date" qualifier="accessioned">2018-05-02T13:49:38Z</dim:field>
<dim:field mdschema="dc" element="date" qualifier="available">2018-05-02T13:49:38Z</dim:field>
<dim:field mdschema="dc" element="date" qualifier="issued">2018-05-02T13:49:39Z</dim:field>
<dim:field mdschema="dc" element="date" qualifier="submitted">2018-02-04T15:45:56Z</dim:field>
<dim:field mdschema="dc" element="date" qualifier="published">2018-01</dim:field>
<dim:field mdschema="dc" element="identifier" qualifier="uri">http://hdl.handle.net/1946/29902</dim:field>
<dim:field mdschema="dc" element="language" qualifier="iso">en</dim:field>
<dim:field mdschema="dc" element="subject" lang="is">Tölvunarfræði</dim:field>
<dim:field mdschema="dc" element="subject" lang="is">Meistaraprófsritgerðir</dim:field>
<dim:field mdschema="dc" element="subject" lang="is">Gagnaskipan</dim:field>
<dim:field mdschema="dc" element="subject" lang="en">Computer science</dim:field>
<dim:field mdschema="dc" element="subject" lang="en">Data structures (Computer science)</dim:field>
<dim:field mdschema="dc" element="title" lang="en">Forced permutation patterns and applications to coincidence classification of mesh patterns and enumeration of permutation classes</dim:field>
<dim:field mdschema="dc" element="title" lang="is">Nauðungarmynstur og notkun þeirra í samtilfellisflokkun möskvamynstra og talningum á umraðanaflokkum</dim:field>
<dim:field mdschema="dc" element="type">Thesis</dim:field>
<dim:field mdschema="dc" element="type" qualifier="degree">Master's</dim:field>
</dim:dim></metadata></record></GetRecord></OAI-PMH>