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On a Problem of the Theory of Multiply Local Formations
Authors:Guo  Wenbin
Institution:(1) Xuzhou Normal University; University of Science and Technology of China, China
Abstract:We describe the tau-closed n-multiply local formations 
$$\mathfrak{F}$$
such that the lattice of all tau-closed n-multiply local formations between 
$$\mathfrak{F}$$
and 
$$\mathfrak{F}$$
cap 
$$\mathfrak{N}$$
is Boolean.
Keywords:group  formation  multiply local formation  formation lattice
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