AndyAlef (@Andy_Alef) profile picture

AndyAlef

@Andy_Alef

Hago videos de matemáticas en TikTok | Las matemáticas son la materia donde nunca sabemos de qué hablamos ni si lo que decimos es cierto. -Russell

Joined August 2022
  • Tweets207
  • Following167
  • Followers16
11Media
Photo by AndyAlef (@Andy_Alef)Photo by AndyAlef (@Andy_Alef)Photo by AndyAlef (@Andy_Alef)Photo by AndyAlef (@Andy_Alef)Photo by AndyAlef (@Andy_Alef)Photo by AndyAlef (@Andy_Alef)Photo by AndyAlef (@Andy_Alef)
This is a famous picture of Erdős and a young Terence Tao in 1985 discussing mathematics. I recently learnt what they were talking about.
Image from Thomas Bloom (@thomasfbloom)
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PEMDAS is trending again so I'm begging you to just use clearer notation
Top frame: Kid pretending the door knob hits their forehead. 8÷2(2+2) Bottom frame: Door knob is now covered by some foam. (8/2)(2+2) or 8/((2)(2+2))

ALT Top frame: Kid pretending the door knob hits their forehead. 8÷2(2+2) Bottom frame: Door knob is now covered by some foam. (8/2)(2+2) or 8/((2)(2+2))

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I don’t condone it, but…
Arrested development meme. Lucille: if you were saying, I play favorites, you were wrong. Lucille: I love all my subjects equally. Lucille: I don’t care for statistics.

ALT Arrested development meme. Lucille: if you were saying, I play favorites, you were wrong. Lucille: I love all my subjects equally. Lucille: I don’t care for statistics.

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+ − × ÷ = their first usage… 1/6
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Sea f: R³ —> R² Ejemplo:
Image from Roberto Santos (@rober_fun)
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AndyAlef retweeted
adithya (@00aleph00) profile picture
adithya
@00aleph001 Aug 2023
an accurate representation of what making math videos feels like. like writing love letters to people who'll never meet you, but who will feel deeply connected to you via your work!
shaurya (@shauseth) profile pictureshaurya
@shauseth31 Jul 2023
how does steve jobs always manage to make me cry
Image from shaurya (@shauseth)
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"you can't multiply vectors" hold my tea in my research into geometric algebra, I've come up with a neat minimal starting assumption: v² = ||v||² - a vector multiplied by itself is its length squared it then follows that multiplying two vectors, gives you a quaternion c:
a step by step guide for how and why multiplying two vectors gives you a quaternion, using concepts from geometric algebra, namely bivectors, which in this case gives you a structure isomorphic to quaternions

ALT a step by step guide for how and why multiplying two vectors gives you a quaternion, using concepts from geometric algebra, namely bivectors, which in this case gives you a structure isomorphic to quaternions

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I'm a mathematician... all I do all day is write equations on glass.
Image from Anthony Bonato (@Anthony_Bonato)
Image from Anthony Bonato (@Anthony_Bonato)
Image from Anthony Bonato (@Anthony_Bonato)
Image from Anthony Bonato (@Anthony_Bonato)
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The mathematicians Julian Sahasrabudhe, Simon Griffiths, Marcelo Campos, and Rob Morris have exponentially improved upon the upper bound of the Ramsey number, one of the most difficult quantities to calculate in all of mathematics. @slomanleila reports: quantamagazine.org/after-nea…
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As a mathematician, I am a... (See Freeman Dyson's description in ams.org/notices/200902/rtx09… or the screenshot in next tweet.)
27%Bird
36%Frog
37%Just show me the results
197 votes • Final results
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Replying to @akivaw
Oh, cool. How about this? Extend the yellow lines and add them. That's 36-(4 cells counted twice). Now add the four corner 3x3's. That's 36. Subtract the same 4 cells as with the yellow calculation. Then subtract off the eight overlapping 1x2 cells from both quantities.
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Replying to @divbyzero
Fun fact: in any solved sudoku, the set of digits in the yellow region (counted with multiplicity) equals the set of digits in the blue region (counted with multiplicity). This is sometimes called Phistomefel's theorem. Can you prove it?
A solved sudoku. The 16 cells surrounding the central box are colored orange. In each of the four corners a 2x2 square of cells is colored blue, making 16 in total.

ALT A solved sudoku. The 16 cells surrounding the central box are colored orange. In each of the four corners a 2x2 square of cells is colored blue, making 16 in total.

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Friendship ended with Set Theory. Now Category Theory is my best friend
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So having a classroom exercise where students propose different ideas for what it means to do (-a)(-b), see where each possibility leads, and then let them realize the definition of (-a)(-b) = ab makes more sense than the others because it has nice, desired properties.
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The Continuity of Splines is finally premiering tonight!! ;-;🎉 🌍 20:00 CET 🌎 2pm EST / 11am PST let's hang out and watch it together! I'll be in chat 💖 youtube.com/watch?v=jvPPXbo8…
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Replying to @3blue1brown
Wow that's cute, but nothing compared to my probabilistic O(1) implementation: def isPrime(n): return False it's guaranteed to become more and more accurate as 'n' gets bigger and bigger.
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I can't believe it. I really can't believe it. They suspended Angle-Side-Side's Twitter account for impersonating a triangle congruence.
Screenshot of fake twitter user "Angle-Side-Side" with a blue checkmark, twitter handle @ASSTriangleCongruence, 916 following, 2.5M followers. Account suspended. Twitter suspends accounts that violate the Twitter Rules. Learn More.

ALT Screenshot of fake twitter user "Angle-Side-Side" with a blue checkmark, twitter handle @ASSTriangleCongruence, 916 following, 2.5M followers. Account suspended. Twitter suspends accounts that violate the Twitter Rules. Learn More.

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Pythagorean Theorem/Distance formula meme
Top: Pythagorean Theorem having a verified account: This account is verified because it's notable in government, news, entertainment, or another designated category. Bottom: Distance formula having a verified account: This account is verified because it's subscribed to Twitter Blue.

ALT Top: Pythagorean Theorem having a verified account: This account is verified because it's notable in government, news, entertainment, or another designated category. Bottom: Distance formula having a verified account: This account is verified because it's subscribed to Twitter Blue.

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