Timeline for Hardy theorem on elementary functions
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 2, 2012 at 15:13 | comment | added | Gerald Edgar | Yes. Note that even the muddled definition on the mathworld web site says that trigonometric functions are included among "elementary functions". | |
| Nov 2, 2012 at 10:51 | answer | added | juan | timeline score: 2 | |
| Nov 2, 2012 at 10:49 | comment | added | fedja | That theorem relates to the "Hardy field" (See en.wikipedia.org/wiki/Hardy_field), not to elementary functions in the sense of Liouville. The latter have no such property: just take $f_1=x(2+\sin x)$ and $f_2=x$. | |
| Nov 2, 2012 at 8:57 | history | asked | user27381 | CC BY-SA 3.0 |