John Sheridan

Mathematician, Irish, student of life!

[John Sheridan @jacksheridan]

@femmebedding Iff and only iff

[John Sheridan @jacksheridan]

@fMRI_guy @Formorphology What is the other one? 😅

[John Sheridan @jacksheridan]

@syzygay1 @littmath https://t.co/DTjS8FVx1H

[John Sheridan @jacksheridan]

@syzygay1 @littmath 👍 I should ref the following paper, where for rat’l normal curves, syzygies of tangential are settled and used to infer generic Green’s conj

[John Sheridan @jacksheridan]

@syzygay1 @littmath Thanks!

[John Sheridan @jacksheridan]

@syzygay1 @littmath but I would be interested in similar examples. The quadrics here are minors of the standard matrix giving twisted cubic - relates to your eg

[John Sheridan @jacksheridan]

@syzygay1 @littmath in P3 so that the tangential surface of the cubic is Q1^2 = Q2Q3. I think equations of tangential of curves are not understood in general,

[John Sheridan @jacksheridan]

@JSEllenberg The Bagel Problem

[John Sheridan @jacksheridan]

@_nilradical @aliciaafterdark @AShmakovMath @sarangop Great fun - thanks for organizing @_nilradical !

[John Sheridan @jacksheridan]

@LisaNicoleMk1 Happy birthday Lisa!!

[John Sheridan @jacksheridan]

@ColinTheMathmo @citizen_of_now Funny enough 864=500+256+108 so I initially thought 864 is a bad guess because this pattern doesn’t explain 500. Turns out 3^3+4^3+5^3=6^3..

[John Sheridan @jacksheridan]

@sites_ja @mittelwertsatz @jamestanton If x=a/c and y=b/d, then you can write x=ad/cd and y=bc/cd. Then take A=ad, B=bc and C=cd and @mittelwertsatz's argument still works

[John Sheridan @jacksheridan]

@jamestanton Surely it depends on the length of the line whether the volume is really 1/2(base area x ht)? Shortening the line should give smaller volume

[John Sheridan @jacksheridan]

@jamestanton If we allow reflections then those don't have square roots!

[John Sheridan @jacksheridan]

@ilove2teachmath In the UK we were taught order of ops using BODMAS (B=brackets O=other - basically the P and E of PEMDAS). Note the swapped order of M and D

[Steven Strogatz @stevenstrogatz]

The number of minutes of daylight is increasing at its maximum rate today. Happy max derivative day, everybody!

[John Sheridan @jacksheridan]

@icecolbeveridge @robeastaway Gore-Bush was also a tie to 3SF in Florida in 2000. But I agree, it's a rare thing.

[European Mathematical Society @euromathsoc]

Sadly, in the last few days of 2018 we lost several prominent members of our community: we pay tribute and bid farewell to Elias Stein, Peter Swinnerton-Dyer, and Bogdan Bojarski.