Timeline for What are the $\inf$ and $\sup$ of the area of quadrilateral given its sides length?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| Apr 13 at 13:46 | comment | added | KhashF | @AaronBergman $\cos^2\theta=1$ may not be always attainable. Because there are definitely cases where $(s-a)(s-b)(s-c)(s-d)<abcd$. So the infimum should be analyzed on a more case-by-case basis. | |
| Apr 13 at 12:13 | comment | added | Aaron Bergman | When $\cos^2\theta = 1$, right? | |
| Apr 12 at 23:17 | comment | added | pie | What about the infimum? | |
| Apr 12 at 23:07 | history | edited | Noam D. Elkies | CC BY-SA 4.0 |
insert missing "is" before "the sum of two opposite angles"
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| Apr 12 at 22:54 | history | answered | Noam D. Elkies | CC BY-SA 4.0 |