<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>6925</termId><termName>Área 07. Ecuaciones</termName><termType>PT</termType><termLanguage>es</termLanguage><termVocabulary>INDICES DE MATERIAS</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>Área 07. Ecuaciones</termSortkey><termCreatedDate>Área 07. Ecuaciones</termCreatedDate><termModifiedDate>2012-01-18 09:49:19</termModifiedDate><relation><relationType>BT</relationType><termId>6918</termId><termName>MATEMÁTICAS (Índice)</termName><termType>TT</termType></relation><relation><relationType>NT</relationType><termId>6976</termId><termName>Análisis combinatorio</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>6974</termId><termName>Análisis funcional</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>6973</termId><termName>Cálculo de variaciones</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>6968</termId><termName>Ecuaciones diferenciales</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>6970</termId><termName>Ecuaciones diferenciales en diferencias</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>6971</termId><termName>Ecuaciones en derivadas parciales</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>6972</termId><termName>Ecuaciones funcionales</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>6969</termId><termName>Ecuaciones integrales</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>6975</termId><termName>Grafos, Teoría de</termName><termType>PT</termType></relation></term>  </Zthes>