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Timeline for Discriminant of $\alpha P(u) + (z-u) P'(u)$

Current License: CC BY-SA 4.0

30 events
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Dec 31, 2021 at 11:31 comment added Stefan Kohl♦ Please be aware that every edit of a question or of one of its answers bumps the thread to the front page. This has happened for this thread already 6 times in the last few hours, and this is a nuisance for other users. Please refrain from unnecessary edits to your posts. -- Usually, the vast majority of minor edits can be avoided by writing and proofreading a question or an answer or any updates to it carefully before posting it.
Dec 31, 2021 at 7:12 history edited Fll'Yissetat CC BY-SA 4.0
Removed superfluous information about the coefficients
Dec 31, 2021 at 6:52 history edited Fll'Yissetat CC BY-SA 4.0
Adding more info about the monomials
Dec 31, 2021 at 5:37 history edited Fll'Yissetat CC BY-SA 4.0
Additional term found
Dec 31, 2021 at 4:47 history edited Fll'Yissetat CC BY-SA 4.0
Minor adjustment of terminology.
Dec 31, 2021 at 4:36 history edited Fll'Yissetat CC BY-SA 4.0
Additional info about the ordinary polar derivative
Dec 31, 2021 at 4:14 history edited Fll'Yissetat CC BY-SA 4.0
Resultant-like coefficients of powers of $\alpha$ added to (1)
S Mar 15, 2021 at 8:02 history bounty ended CommunityBot
S Mar 15, 2021 at 8:02 history notice removed CommunityBot
Mar 13, 2021 at 16:09 history edited Fll'Yissetat CC BY-SA 4.0
Rephrased a sentence for clarity
Mar 11, 2021 at 13:24 history edited Fll'Yissetat CC BY-SA 4.0
Minor typo
Mar 9, 2021 at 17:04 history edited Fll'Yissetat CC BY-SA 4.0
Changed order of importance, minor updates
Mar 7, 2021 at 9:05 history edited Fll'Yissetat CC BY-SA 4.0
polar derivatives => the polar derivative
Mar 7, 2021 at 9:00 history edited Fll'Yissetat CC BY-SA 4.0
polar derivatives => the polar derivative
S Mar 7, 2021 at 6:31 history bounty started Fll'Yissetat
S Mar 7, 2021 at 6:31 history notice added Fll'Yissetat Draw attention
Mar 7, 2021 at 6:20 history edited Fll'Yissetat CC BY-SA 4.0
Minor fixes
Mar 7, 2021 at 6:13 history edited Fll'Yissetat CC BY-SA 4.0
New ideas about transformed coefficients added in (2)
Feb 27, 2021 at 2:34 history edited Fll'Yissetat CC BY-SA 4.0
Added a link to TT's profile, minor fixes
Feb 23, 2021 at 19:14 history edited Fll'Yissetat CC BY-SA 4.0
Fixed a variable and the numbering
Feb 22, 2021 at 19:15 history edited Fll'Yissetat CC BY-SA 4.0
Added detail about polar derivatives
Feb 17, 2021 at 19:28 history edited Fll'Yissetat CC BY-SA 4.0
Various approaches added and refined slightly.
Jan 12, 2021 at 8:15 history edited Fll'Yissetat CC BY-SA 4.0
Compactified expressions, fixed formatting.
Jan 6, 2021 at 15:20 history edited Fll'Yissetat CC BY-SA 4.0
Different solution strategies suggested.
Jan 6, 2021 at 0:05 history edited Fll'Yissetat CC BY-SA 4.0
Content replaced with a potentially more promising approach.
Dec 28, 2020 at 11:23 history edited Fll'Yissetat CC BY-SA 4.0
Updated based on Terry Tao's comments.
Dec 25, 2020 at 18:24 comment added Terry Tao The expression for $f$ you have is reminiscent of the expression that occurs in the Laguerre separation theorem, see e.g., Theorem 4 of kth.se/polopoly_fs/1.387444.1550155960!/Menu/general/… . As seen in the proof of that theorem, this expression can be converted to a plain derivative after some composition with Mobius transformations and similar operations, so perhaps one needs to look into how discriminants are transformed by such operations.
Dec 25, 2020 at 15:46 history edited Fll'Yissetat CC BY-SA 4.0
added 3 characters in body
Dec 25, 2020 at 15:30 review First posts
Dec 25, 2020 at 16:53
Dec 25, 2020 at 15:27 history asked Fll'Yissetat CC BY-SA 4.0
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