http://openproblemgarden.org/op/odd_incongruent_covering_systems Comments for "Odd incongruent covering systems" en http://openproblemgarden.org/op/odd_incongruent_covering_systems <table cellspacing="10"> <tr> <td> Author(s): <a href="/category/erdos">Erdos</a>; <a href="/category/selfridge_john_l">Selfridge</a>&nbsp;&nbsp; </td> <td align=right> Subject: <a href="/category/number_theory_0">Number Theory</a> » <a href="/category/combinatorial_number_theory">Combinatorial N.T.</a>&nbsp;&nbsp; </td> </tr> <tr> <td colspan=2> <table border=1 cellspacing="5"> <tr><td> <div class="envtheorem"><b>Conjecture</b>&nbsp;&nbsp; There is no <a href="http://en.wikipedia.org/wiki/covering system">covering system</a> whose moduli are odd, distinct, and greater than 1. </div> </tr></td> </table> </td> </tr> </table> Erdos, Paul Selfridge, John L. covering system Number Theory Combinatorial Number Theory http://openproblemgarden.org/op/odd_incongruent_covering_systems#comment Sat, 04 Aug 2007 10:48:03 +0200 Robert Samal 491 at http://openproblemgarden.org