SUBGROUPS OF THE MULTIPLICATIVE GROUP OF THE DIVISION RING OF REAL QUATERNIONS

Văn Chua Lê

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Abstract

 

Let  be the division ring of real quaternions and  the multiplicative group of  A subgroup  of  is said to be almost subnormal if a sequence of subgroups exists

 

such that for any    is normal in  or  has the finite index in  In this paper, we show that every almost subnormal subgroup of  is normal.

 

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References

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