The action of special linear group on the set of mutually distinct triple points of circle and invariant measure
Commun. Korean Math. Soc. 2021 Vol. 36, No. 4, 829-833
https://doi.org/10.4134/CKMS.c200380
Published online February 26, 2021
Printed October 31, 2021
Sanghoon Kwon
Catholic Kwandong University
Abstract : We investigate the M\"{o}bius transformation action of \linebreak $PSL(2,\mathbb{R})$ on the set of mutually distinct ordered triple points of $\mathbb{R}\cup\{\infty\}$.
Keywords : Upper-half plane, invariant measure, projective frame
MSC numbers : Primary 37E35; Secondary 28D05
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