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<record version="5" id="2136">
 <title>monotonically nondecreasing</title>
 <name>MonotonicallyNondecreasing</name>
 <created>2002-02-18 21:37:59</created>
 <modified>2005-08-16 00:38:58</modified>
 <type>Definition</type>
 <creator id="2" name="akrowne"/>
 <author id="2" name="akrowne"/>
 <classification>
	<category scheme="msc" code="40-00"/>
 </classification>
 <synonyms>
	<synonym concept="monotonically nondecreasing" alias="monotone nondecreasing"/>
 </synonyms>
 <related>
	<object name="MonotonicallyNonincreasing"/>
 </related>
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 <content>A sequence $(s_n)$ (with real elements)  is called \emph{monotonically nondecreasing} if 

$$ s_m \ge s_n \;\forall\; m &gt; n $$

Similarly, a real function $f(x)$ is called monotonically nondecreasing if 

$$ f(x) \ge f(y) \;\forall\; x &gt; y $$

Compare this to monotonically increasing.

\textbf{Conflict note.}  In other contexts, such as \cite{NIST}, this is called \emph{monotonically increasing} (despite the fact that the sequence could be ``flat.''  In such a context, our definition of ``monotonically increasing'' is called \emph{strictly increasing}.

\begin{thebibliography}{3}
\bibitem{NIST} ``\PMlinkexternal{monotonically increasing}{http://www.nist.gov/dads/HTML/monotoncincr.html},'' from the NIST Dictionary of Algorithms and Data Structures, Paul E. Black, ed.
\end{thebibliography}</content>
</record>
