Some Matrix Iterations for Computing Matrix Sign Function

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td align="left">Methods</td><td align="center">Newton</td><td align="center">Halley</td><td align="center">M4</td><td align="center">PM2</td></tr><tr><td align="center" colspan="5"><hr/></td></tr><tr><td align="left"> Number of iterations</td><td align="center">12</td><td align="center">8</td><td align="center">7</td><td align="center">6</td></tr><tr><td align="left">COC</td><td align="center">1.99999</td><td align="center">2.99561</td><td align="center">4.04145</td><td align="center">4.03896</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Results of comparisons for Example <a href="https://static.hindawi.com/articles/jam/volume-2014/425654/figures/#ex4.3">3</a>.

Journal of Applied Mathematics

tab2

Table 2

Table 2: Some Matrix Iterations for Computing Matrix Sign Function 