Non-Euclidean versions of some classical triangle inequalities - Dragutin Svrtan and Darko Veljan

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    Non-Euclidean versions of some classical triangle inequalities - Dragutin Svrtan and Darko Veljan​

    In this paper we recall with short proofs of some classical triangle inequalities, and prove corresponding non-Euclidean, i.e., spherical and hyperbolic versions of these inequalities. Among them are the well known Euler's inequality, Rouché's inequality (also called ``the fundamental triangle inequality"), Finsler - Hadwiger's inequality, isoperimetric inequality and others.

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    LTTK CTV, 9/10/19
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