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<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>wiggles</title><link rel="stylesheet" href="../../jargon.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.61.0"/><link rel="home" href="../index.html" title="The Jargon File"/><link rel="up" href="../W.html" title="W"/><link rel="previous" href="widget.html" title="widget"/><link rel="next" href="wild-side.html" title="wild side"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">wiggles</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="widget.html">Prev</a><EFBFBD></td><th width="60%" align="center">W</th><td width="20%" align="right"><EFBFBD><a accesskey="n" href="wild-side.html">Next</a></td></tr></table><hr/></div><dt><a id="wiggles"/><dt xmlns="" id="wiggles"><b>wiggles</b>: <span xmlns="http://www.w3.org/1999/xhtml" class="grammar">n.</span></dt></dt><dd><p> [scientific computation] In solving partial differential equations
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by finite difference and similar methods, wiggles are sawtooth
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(up-down-up-down) oscillations at the shortest wavelength representable on
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the grid. If an algorithm is unstable, this is often the most unstable
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waveform, so it grows to dominate the solution. Alternatively, stable
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(though inaccurate) wiggles can be generated near a discontinuity by a
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Gibbs phenomenon.</p></dd><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="widget.html">Prev</a><EFBFBD></td><td width="20%" align="center"><a accesskey="u" href="../W.html">Up</a></td><td width="40%" align="right"><EFBFBD><a accesskey="n" href="wild-side.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">widget<EFBFBD></td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"><EFBFBD>wild side</td></tr></table></div></body></html>
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