Timeline for Discriminants of indefinite integral binary quadratic forms admitting 3 or 6 torsion.
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Jul 27, 2016 at 19:33 | comment | added | Will Jagy | Thanks. He asked a separate question after posting his comments here, I have been answering there, and may have found what he really wants to hear, not sure yet. | |
| Jul 27, 2016 at 19:29 | comment | added | Noam D. Elkies | Sorry, as is often the case my reply to "Do you know a reference for . . ." is no. Indeed in the present case the point of my posting yet another answer is that the question can be answered without knowing anything about the arithmetic of Pell's equation or the "topography" etc. of indefinite binary forms. | |
| Jul 27, 2016 at 17:46 | comment | added | Will Jagy | Hi, Noam. Do you know a reference for Stanley's question, about "Overall, five of the seven frieze groups are realizable as symmetries of the topograph." | |
| Jul 27, 2016 at 17:08 | history | answered | Noam D. Elkies | CC BY-SA 3.0 |