<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31368769</termId><termName>mathematical physicists</termName><termType>PT</termType><termNote><![CDATA[ Physicists specializing in deducing the consequences of established physical theories using mainly the method of mathematical solution. ]]></termNote><termCreatedDate>2026-03-30 20:39:29</termCreatedDate><relation><relationType>UF</relationType><termId>31368770</termId><termName>mathematical physicist</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31368771</termId><termName>mathematical physicist&apos;s</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31368772</termId><termName>mathematical physicists&apos;</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31337891</termId><termName>physicists</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31337858</termId><termName>mathematicians</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31342171</termId><termName>mathematical physics</termName><termType>PT</termType></relation></term>  </Zthes>