Resources for displaced mathematicians

Posted on 2022/03/15 by Carl Robitaille

Resources for displaced mathematicians https://t.co/ALlpYD9zgm
— MathFeed (@MathFeed) March 3, 2022

«Nous vivons une des périodes les plus dangereuses de l’histoire de l’humanité»

Posted on 2022/03/11 by Carl Robitaille

«Nous vivons une des périodes les plus dangereuses de l’histoire de l’humanité»

Vladimir Fédorovski est un ancien diplomate russe 🇷🇺 d’origine ukrainienne.🇺🇦

«Nous vivons une des périodes les plus dangereuses de l’histoire de l’humanité»

🎧 Écoutez-le au 🎙 de @drainvillepm ➡ https://t.co/wjd39ilfO4 pic.twitter.com/RM4Y2RRxN0
— 98.5 FM (@le985fm) March 2, 2022

This thread, about the absolute ruin that awaits the Russian economy, is absolutely terrifying. (Worth a Google Translate)

Posted on 2022/03/11 by Carl Robitaille

This thread, about the absolute ruin that awaits the Russian economy, is absolutely terrifying. (Worth a Google Translate) https://t.co/Im6jxyWoxU
— Julia Ioffe (@juliaioffe) March 2, 2022

«Femmes et enfants désignés comme cibles par Vladimir Poutine»

Posted on 2022/03/11 by Carl Robitaille

«Femmes et enfants désignés comme cibles par Vladimir Poutine»

7e jour de l’invasion de l’Ukraine 🇺🇦 | «Les femmes et les enfants sont désignés comme cibles par Vladimir Poutine» 🇷🇺

🎧 Écoutez ce poignant témoignage de députée ukrainienne, Lesia Vasylenko, au 🎙 de @drainvillepm ➡ https://t.co/ksXupVVSWu pic.twitter.com/hy0MULFIZR
— 98.5 FM (@le985fm) March 2, 2022

Greek letters

Posted on 2022/03/11 by Carl Robitaille

Okay this is preliminary but I believe it is correct to first order. pic.twitter.com/fLpwZcLCfJ
— Katie Mack (@AstroKatie) March 2, 2022

T_n( cos(theta) ) = cos(n theta) where T_n is the nth Chebyshev polynomial of the first kind

Posted on 2022/03/11 by Carl Robitaille

T_n( cos(theta) ) = cos(n theta) where T_n is the nth Chebyshev polynomial of the first kind.
— Algebra Etc. (@AlgebraFact) March 2, 2022

Zelensky

Posted on 2022/03/11 by Carl Robitaille

Zelensky

Zelensky https://t.co/gDqWdQXpV2
— ygreck (@ygreck) March 2, 2022

P(x,y) = x buffalos y

Posted on 2022/03/11 by Carl Robitaille

P(x,y) = x buffalos y
B = the set of buffalo in Buffalo

The buffalo⁸ statement can be phrased as:
∀a∈B, ∃b∈B:P(b,a)→∃c∈B:P(a,c)

🦬 🦬 🦬 🦬 🦬 🦬 🦬 🦬
— Bill Shillito – now at @solidangles.bsky.social (@solidangles) March 2, 2022

If three points lie on the graph of y=1/x, so will their orthocenter

Posted on 2022/03/11 by Carl Robitaille

If three points lie on the graph of y=1/x, so will their orthocenter. pic.twitter.com/jdg7qUEfaf
— Albert Chern (@theAlbertChern) March 2, 2022

If a man born blind can feel the differences between shapes such as spheres and cubes, could he, if his sight was restored, distinguish those objects by sight (without touching them)?

Posted on 2022/03/11 by Carl Robitaille

Q: "If a man born blind can feel the differences between shapes such as spheres and cubes, could he, if his sight was restored, distinguish those objects by sight (without touching them)?"
This is Molyneux's Problem: a thought experiment from 1688. In 2003 it was solved: pic.twitter.com/kMaYndYvoC
— McKinley Valentine (@mckinleaf) March 2, 2022

Blog.CarlRobitaille.org

Indiscriminate laziness

Author Archives: Carl Robitaille

Resources for displaced mathematicians

«Nous vivons une des périodes les plus dangereuses de l’histoire de l’humanité»

This thread, about the absolute ruin that awaits the Russian economy, is absolutely terrifying. (Worth a Google Translate)

«Femmes et enfants désignés comme cibles par Vladimir Poutine»

Greek letters

T_n( cos(theta) ) = cos(n theta) where T_n is the nth Chebyshev polynomial of the first kind

Zelensky

P(x,y) = x buffalos y

If three points lie on the graph of y=1/x, so will their orthocenter

If a man born blind can feel the differences between shapes such as spheres and cubes, could he, if his sight was restored, distinguish those objects by sight (without touching them)?