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<p>the algorithm for <b>symmetric level-index</b> (<b>SLI</b>) arithmetic, and a parallel implementation of it. There has been extensive work on developing the SLI arithmetic algorithms and extending them to <a href="page.php?w=complex_number">complex</a> and <a href="page.php?w=vector_%28mathematics_and_physics%29">vector</a> arithmetic operations.</p>

<p><big>Definition</big></p>
<p>The idea of the level-index system is to represent a non-negative <a href="page.php?w=real_number">real number</a>  as<br/>
: where , and the process of exponentiation is</p><p>
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