Timeline for Triangular Lattice Points close to the Origin
Current License: CC BY-SA 3.0
10 events
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| Jun 17, 2020 at 9:04 | history | edited | Community Bot |
Commonmark migration
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| May 1, 2018 at 13:07 | comment | added | orlp |
The formula x^2 + xy + y^2 can also be derived from the norm of an Eistenstein integer, which is a^2 - ab + b^2. Note that the sign of a and b is irrelevant except in the term ab so it has the same amount of solutions.
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| Apr 30, 2018 at 14:43 | history | edited | JungHwan Min | CC BY-SA 3.0 |
added 17 characters in body
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| Apr 30, 2018 at 7:31 | comment | added | miles |
x^2+x y+y^2 -> x(x+y)+y^2 saves a byte
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| Apr 29, 2018 at 19:05 | history | edited | JungHwan Min | CC BY-SA 3.0 |
edited body
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| Apr 29, 2018 at 16:38 | comment | added | Bubbler |
FYI, the formula x^2+x y+y^2 can also be derived from the Law of Cosines with 120 degrees.
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| Apr 29, 2018 at 9:27 | history | edited | JungHwan Min | CC BY-SA 3.0 |
added 2 characters in body
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| Apr 29, 2018 at 8:50 | history | edited | JungHwan Min | CC BY-SA 3.0 |
deleted 2 characters in body
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| Apr 29, 2018 at 8:41 | history | edited | JungHwan Min | CC BY-SA 3.0 |
added 573 characters in body
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| Apr 29, 2018 at 8:23 | history | answered | JungHwan Min | CC BY-SA 3.0 |