<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">mathematical concepts</topic></authority><related type="narrower"><topic>geometric concepts</topic></related><related type="narrower"><topic>statistics-related concepts</topic></related><related type="narrower"><topic>equations</topic></related><related type="narrower"><topic>functions</topic></related><related type="narrower"><topic>logarithms</topic></related><related type="narrower"><topic>numbers</topic></related><related type="narrower"><topic>roots</topic></related><related type="narrower"><topic>series</topic></related><related type="narrower"><topic>mathematical models</topic></related><related type="narrower"><topic>algorithms</topic></related><related type="narrower"><topic>scalars</topic></related><related type="narrower"><topic>vectors</topic></related><related type="narrower"><topic>infinity</topic></related><related type="narrower"><topic>ratios</topic></related><related type="narrower"><topic>maximum</topic></related><related type="narrower"><topic>minimum</topic></related><related type="narrower"><topic>number systems</topic></related><related type="other"><topic>mathematics</topic></related><related type="broader"><topic>scientific concepts</topic></related><variant type="other"><topic>concepts, mathematical</topic></variant><variant type="other"><topic>mathematical concept</topic></variant> <note xml:lang="en"><![CDATA[ Scientific concepts related to mathematics.  ]]></note></mads>