On the basis of the condition D2.VP3r > 0 : Ur(P) N pG -{p} by L. FejesT6th we test two-dimensional motion groups with rotations of the pseudoeuclidean plane for D2-discreteness. Using an ergodic measure on the torus we will show that these groups aren't D2-discrete.
ZusammenfassungAusgehend von der Bedingung D2.VP3r > 0 : Ur(P)N pG ----{p} von L.
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