<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31424926</termId><termName>concave mirrors</termName><termType>PT</termType><termNote><![CDATA[ Mirrors in which the center is farther away from the object than the edges and that reflect enlarged or reduced images. ]]></termNote><termCreatedDate>2026-03-30 20:54:34</termCreatedDate><relation><relationType>UF</relationType><termId>31424927</termId><termName>concave glasses</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31424928</termId><termName>concave mirror</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31424929</termId><termName>mirrors, concave</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31394895</termId><termName>curved mirrors</termName><termType>PT</termType></relation></term>  </Zthes>