an:04190031
Zbl 0722.20035
Garit, V. P.; Zamorzaev, A. M.
On a subgroup of finite index in the \(n\)-dimensional discrete group of affine transformations
RU
Mat. Issled. 103, 43-51 (1988).
00154270
1988
j
20H15 20E07 57S30 22E40 51F15
subgroup of finite index; group of affine motions
It is proved that if H is a subgroup of finite index in the group of affine motions G, then for G to be n-dimensional and discrete it is necessary and sufficient for H to be n-dimensional and discrete.
K.Riives (Tartu)