Timeline for Summation involving Euler's totient function
Current License: CC BY-SA 4.0
17 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 27, 2019 at 21:41 | vote | accept | cupcake111680 | ||
| Sep 27, 2019 at 21:41 | vote | accept | cupcake111680 | ||
| Sep 27, 2019 at 21:41 | |||||
| Sep 27, 2019 at 21:41 | vote | accept | cupcake111680 | ||
| Sep 27, 2019 at 21:41 | |||||
| Sep 27, 2019 at 17:12 | answer | added | WhatsUp | timeline score: 4 | |
| Sep 27, 2019 at 16:40 | comment | added | cupcake111680 | @WhatsUp An algorithm would do if there is no closed-form expression | |
| Sep 27, 2019 at 16:09 | comment | added | WhatsUp | Do you need a closed-form expression, or just a sufficiently fast algorithm to evaluate the sum (e.g. for some math-programming puzzle)? | |
| Sep 27, 2019 at 8:01 | answer | added | Greg Martin | timeline score: 5 | |
| Sep 27, 2019 at 7:03 | comment | added | cupcake111680 | @user35593 I did, actually, and it didn't yield anything useful. | |
| Sep 27, 2019 at 6:49 | comment | added | user35593 | Did you try computing the first few elements and enter it on oeis.org? | |
| Sep 27, 2019 at 6:09 | history | edited | cupcake111680 | CC BY-SA 4.0 |
deleted 11 characters in body
|
| Sep 27, 2019 at 6:01 | comment | added | cupcake111680 | @user35593 Correct -- but how do we get a closed form for all $n$, $p$? | |
| Sep 27, 2019 at 5:50 | comment | added | user35593 | The observation follows because then p and i are coprime and then we have $\phi(pii)=\phi(p)\phi(i)$ | |
| Sep 27, 2019 at 4:30 | history | edited | cupcake111680 | CC BY-SA 4.0 |
added 94 characters in body
|
| Sep 27, 2019 at 4:09 | comment | added | cupcake111680 | @AlexeyUstinov Yes, a closed-form expression is preferred. | |
| Sep 27, 2019 at 3:59 | comment | added | Alexey Ustinov | Do you need closed-form expression exactly? It will be easyer to prove asymptotic formula for this sum. | |
| Sep 27, 2019 at 3:40 | review | First posts | |||
| Sep 27, 2019 at 3:42 | |||||
| Sep 27, 2019 at 3:35 | history | asked | cupcake111680 | CC BY-SA 4.0 |