ON A CLASS OF TWO-DIMENSIONAL FEDOROV GROUPS
ON A CLASS OF TWO-DIMENSIONAL FEDOROV GROUPS
A class G of discrete groups of the Lobačevskiĭ plane with compact fundamental domain, which are extendible to discrete groups of Lobačevskiĭ space, is considered herein. It is the class of symmetry groups of normal regular partitions of the Lobačevskiĭ plane into equal polygons which meet in equal angles at …