Editing Partition of an interval (section)

==Norm of a partition==
The '''norm''' (or '''mesh''') of the partition
: {{math|''x''<sub>0</sub> < ''x''<sub>1</sub> < ''x''<sub>2</sub> < … < ''x''<sub>''n''</sub>}}

is the length of the longest of these subintervals<ref>{{Cite book|last=Hijab|first=Omar|title=Introduction to Calculus and Classical Analysis|publisher=Springer|year=2011|isbn=9781441994882|page=60|url=https://books.google.com/books?id=_gb9fMqur9kC&pg=PA60}}</ref><ref>{{Cite book|author=Zorich, Vladimir A.|author-link=Vladimir Zorich|title=Mathematical Analysis II|publisher=Springer|year=2004|isbn=9783540406334|page=108|url=https://books.google.com/books?id=XF8W9W-eyrgC&pg=PA108}}</ref>
: {{math|max{{{abs|''x''<sub>''i''</sub> − ''x''<sub>''i''−1</sub>}} : ''i'' {{=}} 1, … , ''n'' }}}.