For a non-cyclic finite group X let s(X) be the least number of proper subgroups of X whose union is X. Precise formulas or estimates are given for s(SwrCm) for certain nonabelian finite simple groups S where Cm is a cyclic group of order m.
Covering certain wreath products with proper subgroups
GARONZI, MARTINO;
2011
Abstract
For a non-cyclic finite group X let s(X) be the least number of proper subgroups of X whose union is X. Precise formulas or estimates are given for s(SwrCm) for certain nonabelian finite simple groups S where Cm is a cyclic group of order m.
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Covering certain Wreath Products with Proper Subgroups.pdf
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