Unità di conversione , conversione di unità

<style type="text/css">#mort_cal_1 br {display:none;}</style><div style="width: 200px;text-align:center;"><div style="border:1px solid #000;background-color:#fefefe;padding: 0px 0px;margin: 0px 0px;align:center;text-align:center;overflow:hidden;"><div id="xcolor1_1" style="font-size:12px;color:#173a00;line-Altezza:16px;font-family: arial; font-Peso:bold;background:#94abf0;padding: 3px 1px;text-align:center;"><a href="http://it.bestconverter.org/unitconverter_density.php" alt="Densità di conversione" title="Densità di conversione" id="upper_link" style="color:#000000;font-size:14px;text-decoration:none;line-Altezza:16px;font-family: arial;" >Densità di conversione</a></div><script type="text/javascript" src="http://it.bestconverter.org/js/unitconverter_density2.js"></script><table  width=99% align=center style="align:center;text-align:left;background-color: #fefefe;color:#222222;"><tr><td>From:</td></tr><tr><td><input type="text" size="20" name="valuefromdensity2" id="valuefromdensity2" value="1" onkeyup="cc_density2();" style="background-color:#ffffff;color:#000;text-decoration:none;font-family: arial;rial;border:1px solid #999;padding:1px!important;"></td></tr><tr><td><script type='text/javascript'>ins_density2('selectfromdensity2');</script></td></tr><tr><td>A:</td></tr><tr><td><input type="text" size="20" name="valuetodensity2" id="valuetodensity2" value="1" onkeyup="ccb_density2();" style="background-color:#ffffff;color:#000;text-decoration:none;font-family: arial;rial;border:1px solid #999;padding:1px!important;"></td></tr><tr><td><script type='text/javascript'>ins_density2('selecttodensity2');</script></td></tr><tr><td>Risultato:</td></tr><tr><td><span name="valueresultdensity2" id="valueresultdensity2"></span></td></tr></table></div><a href="http://it.bestconverter.org/" alt="Unità di conversione" title="Unità di conversione" id="unit_link" style="font-size:12px;text-decoration:none;line-Altezza:16px;font-family: arial;align:center;" >Densità di conversione</a></div>

Unità di conversione , conversione di unità:

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FGH-based notation for natural numbers - Googology Wiki
Three or four months ago I came up with an idea of FGH -based notation for natural numbers I thought that we need not only to make up numbers as large as possible, but also to describe diversity of all numbers up to some large numbers