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<h3>Balanced Ternary</h3>

<p>The digits of a balanced ternary numeral are coefficients of powers of 3, but
instead of coming from the set {0, 1, 2}, the digits are {-, 0 and +}. They are
<i>balanced</i> because they are arranged symmetrically about zero.</p>

<table border='1'>
	<tr><th colspan="2">Unsigned</th><th colspan="2">Balanced</th></tr>
	<tr><th>Dec.</th><th>Tern.</th><th>Tern.</th><th>Dec.</th></tr>
	<tr><td>0</td><td>00</td><td>--</td><td>-4</td></tr>
	<t