Timeline for Geometric interpretation of Cusps for general groups?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Mar 4, 2015 at 13:30 | comment | added | Matthias Wendt | A detailed discussion of the relation between the compactifications can be found in the book of Borel and Ji (Section III.15). In the case $SL_2\mathbb{Z}$, the boundary $S^1$ of the Borel-Serre compactification is mapped to the cusp point of the geodesic compactification. In the higher rank situations, the Borel-Serre compactification still has the geodesic compactification as a quotient, but I am not sure about the fibers. | |
| Mar 1, 2015 at 13:23 | comment | added | Spencer Leslie | Thank you! Is there a way of understanding a relationship between the two compactifications you mention? | |
| Mar 1, 2015 at 13:22 | vote | accept | Spencer Leslie | ||
| Feb 28, 2015 at 12:32 | history | answered | Matthias Wendt | CC BY-SA 3.0 |