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Selfridge, John L.
Covering systems with big moduli ★★
Problem Does for every integer
exist a covering system with all moduli distinct and at least equal to~
?
![$ N $](/files/tex/e178f13e28934a284e7c8f31e0187aee6ebdf650.png)
![$ N $](/files/tex/e178f13e28934a284e7c8f31e0187aee6ebdf650.png)
Keywords: covering system
Odd incongruent covering systems ★★★
Conjecture There is no covering system whose moduli are odd, distinct, and greater than 1.
Keywords: covering system
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