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In the present work we investigate a new type of billiards defined insiden-simplex regions. We determine an invariant ergodic (SRB) measure of thedynamics for any dimension. In using symbolic dynamics the (KS or metric)entropy is computed and we find that the system is chaotic for all cases n > 2.Comment: 7 pages, 1 figure

The entropy of 'strange' billiards inside n-simplexes