Timeline for Generalization of some plane geometry theorems
Current License: CC BY-SA 4.0
19 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 11 at 11:56 | vote | accept | Đào Thanh Oai | ||
| Jun 11 at 11:48 | answer | added | Fedor Petrov | timeline score: 2 | |
| Jun 11 at 8:20 | comment | added | Đào Thanh Oai | In $n=3$, let $A_1, A_2, A_3$ are points $A, B, C$; $B_1, B_2, B_3$ are Fermat triangle of $ABC$. $D_1=D_2=D_3=P$ is the arbitrary point in the plane of $ABC$; $C_1, C_2, C_3$ are the reflection of $A$, $B$, $C$ in $P$, $\ell=1/2$. This is one case of generalization of Dao-Nhi equilateral triangle | |
| Jun 11 at 8:16 | comment | added | Đào Thanh Oai | In $n=3$, let $A_1, A_2, A_3$ are points $A, B, C$; $B_1, B_2, B_3$ are Fermat triangle of $ABC$. $D_1=D_2=D_3=$ the centroid of $ABC$; $C_1, C_2, C_3$ are the Midpoint of $BC, CA, AB$ $\ell=1/3$ we get Napoleon theorem | |
| Jun 11 at 3:51 | history | edited | Đào Thanh Oai | CC BY-SA 4.0 |
added 53 characters in body
|
| Jun 11 at 3:47 | comment | added | Đào Thanh Oai | I am sorry! $n+1 \equiv 1 $ mean: Taking subscripts modul $n$, $\ell$ is real number. I corrected. | |
| Jun 11 at 3:20 | comment | added | Gerry Myerson | What does $n+1\equiv1$ mean? What does $\ell$ stand for? | |
| Jun 11 at 1:35 | history | edited | Đào Thanh Oai | CC BY-SA 4.0 |
edited title
|
| Jun 11 at 1:28 | history | edited | Đào Thanh Oai | CC BY-SA 4.0 |
deleted 4 characters in body; edited title
|
| Jun 10 at 22:58 | history | edited | Đào Thanh Oai | CC BY-SA 4.0 |
added 77 characters in body
|
| Jun 10 at 16:56 | history | edited | LSpice | CC BY-SA 4.0 |
Proofreading, while this is on the front page
|
| Jun 10 at 16:23 | history | edited | Đào Thanh Oai | CC BY-SA 4.0 |
deleted 890 characters in body
|
| Jul 21, 2022 at 7:02 | comment | added | Đào Thanh Oai | mathoverflow.net/questions/366623/… | |
| Jul 18, 2022 at 12:18 | history | edited | Đào Thanh Oai | CC BY-SA 4.0 |
deleted 11 characters in body
|
| Jul 18, 2022 at 9:21 | history | edited | Đào Thanh Oai | CC BY-SA 4.0 |
added 67 characters in body
|
| Jul 18, 2022 at 8:41 | history | edited | Đào Thanh Oai | CC BY-SA 4.0 |
added 53 characters in body
|
| Jul 18, 2022 at 7:46 | history | edited | Đào Thanh Oai | CC BY-SA 4.0 |
deleted 8 characters in body
|
| Jul 18, 2022 at 7:38 | history | edited | Đào Thanh Oai | CC BY-SA 4.0 |
added 32 characters in body
|
| Jul 18, 2022 at 7:32 | history | asked | Đào Thanh Oai | CC BY-SA 4.0 |