Almost Sure (@Almost

Almost Sure

9,439 posts

Almost Sure

@Almost_Sure

George Lowther, Author of Almost Sure blog, on maths, probability and stochastic calculus. Also on YouTube youtube.com/@almostsure

London, UK

almostsuremath.com

Joined September 2020

Pinned
Almost Sure
@Almost_Sure
Jun 8
new Youtube video released! An innocent looking meme that's been floating around the internet for a few years, looking like your standard clickbait slop, but actually hides some interesting math using elliptic curves link below
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Almost Sure
@Almost_Sure
Dec 2, 2024
Almost 2025 the only square year of my lifetime!
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Almost Sure
@Almost_Sure
Mar 21, 2024
He used ‘x’ for the function name and ‘f’ for the argument. Perverse!
MIT CSAIL
@MIT_CSAIL
Mar 21, 2024
Happy birthday Joseph Fourier, whose 1822 equation allows us to listen to mp3s today: bit.ly/22kbNfi
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Almost Sure
@Almost_Sure
Jun 22, 2024
this is some next-level python coding
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Almost Sure
@Almost_Sure
Dec 16, 2023
let’s move it up a notch you’ve heard of elf on the shelf but have you heard of
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Almost Sure
@Almost_Sure
Jan 1, 2024
Replying to @Anthony_Bonato
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Almost Sure
@Almost_Sure
Apr 10, 2024
What software do math YouTubers use to do the fancy math animations?
00:00
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Almost Sure
@Almost_Sure
May 21, 2023
An awesome reference book
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Almost Sure
@Almost_Sure
May 8, 2025
So the new pope is a mathematician. Does he believe every set of reals is measurable? The Solovay model requires the existence of an inaccessible cardinal.
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Almost Sure
@Almost_Sure
May 3, 2024
Not sure exactly, but math twitter is going to be surprised when Taylor Swift actually starts seriously tweeting about Taylor series
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Almost Sure
@Almost_Sure
Aug 12, 2023
My first stochastic process textbook, and still awesome. The yellowing of the pages shows its age (and mine!)
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Almost Sure
@Almost_Sure
Dec 15, 2023
I can do this too…easy one for now you’ve heard of elf on the shelf but have you heard of
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Almost Sure
@Almost_Sure
Jun 1, 2023
Let X = exp(U²/2) and Y=exp(V²/2) where U,V are joint normal with mean 0, variance 1, and 50% correlation. Then, E[X|Y] = 2Y E[Y|X] = 2X They are each, on average, twice as big as the other!
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Almost Sure
@Almost_Sure
Sep 18, 2025
Whatever you do, 𝙛𝙤𝙧 𝙩𝙝𝙚 𝙡𝙤𝙫𝙚 𝙤𝙛 𝙂𝙤𝙙, do not ask random variables to be Lebesgue measurable! If you were so stupid to do that, then 𝙮𝙤𝙪 𝙬𝙤𝙪𝙡𝙙 𝙣𝙤𝙩 𝙚𝙫𝙚𝙣 𝙗𝙚 𝙖𝙗𝙡𝙚 𝙩𝙤 𝙖𝙙𝙙 𝙧𝙖𝙣𝙙𝙤𝙢 𝙫𝙖𝙧𝙞𝙖𝙗𝙡𝙚𝙨 𝙩𝙤𝙜𝙚𝙩𝙝𝙚𝙧.
Probability Fact
@ProbFact
Sep 17, 2025
Why do probabilists take random variables to be Borel (and not Lebesgue) measurable? mathoverflow.net/questions/3160…
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