Timeline for how to determine a biquadratic form is positive-definite
Current License: CC BY-SA 3.0
5 events
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| Jul 14, 2015 at 19:28 | comment | added | Will Jagy | Thanks. I can give a pretty good string of examples by a different guy, at what I suspect is a similar level. Here is the sixth question on a variant of Hadamard matrices math.stackexchange.com/questions/1359986/… where the initial post allowed entries $1,0,-1$ in the matrices. If you look at all his questions, it just appears that he is crowdsourcing something like a Master's project instead of doing anything himself, including simple computer runs for $n$ by $n$ examples with $n$ smaller | |
| Jul 14, 2015 at 19:23 | comment | added | Noah Stein | @WillJagy: That's fair. I hadn't seen the math.stackexchange version, but it looks like the poster did at least wait the requisite week or so before cross-posting. | |
| Jul 14, 2015 at 18:52 | comment | added | Will Jagy | Noah, see math.stackexchange.com/questions/1352115/… I just logged on here, but i would guess the close votes are about a question in an unfamiliar area, with a fishing expedition for iff results, by someone who shows no evidence of research background or effort. | |
| Jul 14, 2015 at 14:53 | history | edited | Noah Stein | CC BY-SA 3.0 |
added 138 characters in body
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| Jul 14, 2015 at 14:48 | history | answered | Noah Stein | CC BY-SA 3.0 |