<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>5827</termId><termName>Cálculo operacional</termName><termType>PT</termType><termCreatedDate>2014-09-15 19:42:22</termCreatedDate><relation><relationType>UF</relationType><termId>5828</termId><termName>Análisis operacional</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>5823</termId><termName>Ecuaciones diferenciales</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>15485</termId><termName>Circuitos eléctricos</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>20193</termId><termName>Cálculo</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31090</termId><termName>Ecuaciones integrales</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>20194</termId><termName>Cálculo integral</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>20212</termId><termName>Cálculo de variaciones</termName><termType>PT</termType></relation></term>  </Zthes>