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Armenian Journal of Mathematics=Հայկական մաթեմատիկական հանդես
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Title:
The Geometry of the Projective Action of SL(3, R) from the Erlangen Perspective
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Գլխ. խմբ.՝ Անրի Ներսեսյան ; Պատ. խմբ.՝ Լինդա Խաչատրյան ; Խմբ. տեղակալ՝ Ռաֆայել Բարխուդարյան
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Uncontrolled Keywords:
Lie Group SL(3, R) ; Homogeneous Space ; Conics ; Exponential Map ; Iwasawa Decomposition
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Abstract:
In this paper, we have investigated the projective action of the Lie group SL(3, R) on the homogeneous space RP2. In particular, we have studied the action of the subgroups of SL(3, R) on the non-degenerate conics in the space RP2. Using the Iwasawa decomposition of SL(2, R), we demonstrate that the isotropy subgroup of the projective unit circle is isomorphic to PSL(2, R) under certain conditions.
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Electronic Open Access Publication of the National Academy of Sciences of Armenia