Timeline for What is known about a^2 + b^2 = c^2 + d^2
Current License: CC BY-SA 3.0
4 events
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| May 14, 2013 at 16:48 | comment | added | Gerhard Paseman | Using the word "random" to describe the notes may be viewed as somewhat disparaging, as well as inaccurate. A term like "variegated" might be preferred, as I find more resemblance between Piezas's notes and a botanical garden than I do between his notes and some of the backyards I've seen lately. Gerhard "As Lovely As A Trie" Paseman, 2013.05.14 | |
| May 14, 2013 at 14:48 | history | edited | Aeryk | CC BY-SA 3.0 |
added 230 characters in body; deleted 9 characters in body
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| May 9, 2013 at 4:18 | comment | added | Noam D. Elkies | But the last puzzle was already solved by Fermat... $$ $$ ...Which also suggests an alternative approach to the equation $a^2+b^2=c^2+d^2$ starting from the factorization $(a+bi)(a-bi)=(c+di)(c-di)$ in ${\bf Z}[i]$. | |
| May 9, 2013 at 3:26 | history | answered | Aeryk | CC BY-SA 3.0 |