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<title>XPP - PHASE SPACE</title>
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<h1>Phase Space</h1>
XPP allows for periodic domains so that you can solve equations on a torus or cylinder. <p> You will be prompted to make <ul>
<li>(A)ll variables periodic,
<li>(N)o variables periodic or
<li>(C)hoose the ones you want. </ul>
<p> You will be asked for the period which is the same for all periodic variables (if they must be different, rescale them) <p>
Choose them by name or by clicking the
appropriate names from the list presented to you. An <b> X </b> will
appear next to the selected ones. Clicking toggles the <b> X </b>. <p>
Type <b> Esc</b> when done or CANCEL or DONE. <p>
XPP mods your variables by this period and is smart
enough when plotting to not join the two ends.
<p>
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