Elliot Lipnowski
@elliotlip.bsky.social
To be specific, in the Dawes, Tomes, Mousely, Grubbs Fidelity Fiduciary Bank.
http://elliotlipnowski.com/
http://elliotlipnowski.com/
Reposted by Elliot Lipnowski
Please join us on 20/Nov to hear Marina Halac (Yale) present "Agreeing to Implement", a joint work with Elliot Lipnowski and Doron Ravid. Panellists: Matteo Camboni and Sam Kapon.
@elliotlip.bsky.social @doronravid.bsky.social @samkapon.bsky.social
@elliotlip.bsky.social @doronravid.bsky.social @samkapon.bsky.social
November 14, 2025 at 10:10 AM
Please join us on 20/Nov to hear Marina Halac (Yale) present "Agreeing to Implement", a joint work with Elliot Lipnowski and Doron Ravid. Panellists: Matteo Camboni and Sam Kapon.
@elliotlip.bsky.social @doronravid.bsky.social @samkapon.bsky.social
@elliotlip.bsky.social @doronravid.bsky.social @samkapon.bsky.social
#mathsky notation question. We feel totally comfortable with a decoration being a function (e.g., for a number x, let \bar{x}:=x^2). But what about a case/font/format change as a function (e.g., for a number x, let \mathbf{x} denote the constant function on [0,1] taking value x)?
September 21, 2025 at 11:22 AM
#mathsky notation question. We feel totally comfortable with a decoration being a function (e.g., for a number x, let \bar{x}:=x^2). But what about a case/font/format change as a function (e.g., for a number x, let \mathbf{x} denote the constant function on [0,1] taking value x)?
Reposted by Elliot Lipnowski
Jimmy Kimmel has learned his lesson.
by Susan Collins
by Susan Collins
September 18, 2025 at 12:58 AM
Jimmy Kimmel has learned his lesson.
by Susan Collins
by Susan Collins
Sex is great but have you tried replacing annoying quantitative bookkeeping arguments in a proof with qualitative arguments to get the same result??
September 17, 2025 at 8:54 PM
Sex is great but have you tried replacing annoying quantitative bookkeeping arguments in a proof with qualitative arguments to get the same result??
Spotify account gives a budget of audiobook hours before needing to pay for more hours, but if you listen to a 10-hour book at double-speed (so 5 listening hours), it counts as 10 hours of your budget. So they price r-speed listening at exactly r times that of unit-speed listening.
September 12, 2025 at 9:23 PM
Spotify account gives a budget of audiobook hours before needing to pay for more hours, but if you listen to a 10-hour book at double-speed (so 5 listening hours), it counts as 10 hours of your budget. So they price r-speed listening at exactly r times that of unit-speed listening.
Wednesday Addams is fashionable af
September 6, 2025 at 10:50 PM
Wednesday Addams is fashionable af
Reposted by Elliot Lipnowski
Boat question.
August 15, 2025 at 3:55 PM
Boat question.
Reposted by Elliot Lipnowski
Schumer, Jeffries propose strongly-worded letter to counter RFK Jr.'s purge at the CDC.
August 29, 2025 at 3:14 AM
Schumer, Jeffries propose strongly-worded letter to counter RFK Jr.'s purge at the CDC.
Seeking #mathsky book recs. I want a good textbook on basics of partial orders, lattices, and interactions of the same with basic topological notions like compactness. Does anybody have any book they like?
August 1, 2025 at 2:16 PM
Seeking #mathsky book recs. I want a good textbook on basics of partial orders, lattices, and interactions of the same with basic topological notions like compactness. Does anybody have any book they like?
Fun, imprecise #mathsky question: Give a "nice" characterization of which subsets X of [0,1] are complete lattices.
[Note, this is harder than the question of which X are complete *sub*lattices, and is much harder than the question of which X are lattices.]
[Note, this is harder than the question of which X are complete *sub*lattices, and is much harder than the question of which X are lattices.]
July 29, 2025 at 7:03 PM
Fun, imprecise #mathsky question: Give a "nice" characterization of which subsets X of [0,1] are complete lattices.
[Note, this is harder than the question of which X are complete *sub*lattices, and is much harder than the question of which X are lattices.]
[Note, this is harder than the question of which X are complete *sub*lattices, and is much harder than the question of which X are lattices.]
Does anybody else here ever look for the ebook version because the hard copy is in another room?
July 26, 2025 at 12:25 AM
Does anybody else here ever look for the ebook version because the hard copy is in another room?
A tiny #mathsky note on conditional expectations. I'd previously seen two standard existence results of different strengths:
a) For square-integrable RVs (L2) via a super easy Hilbert space argument.
b) For integral RVs (L1, a bigger class) via Radon-Nikodym—harder!
But (a) can actually prove (b)!
a) For square-integrable RVs (L2) via a super easy Hilbert space argument.
b) For integral RVs (L1, a bigger class) via Radon-Nikodym—harder!
But (a) can actually prove (b)!
July 22, 2025 at 2:30 PM
A tiny #mathsky note on conditional expectations. I'd previously seen two standard existence results of different strengths:
a) For square-integrable RVs (L2) via a super easy Hilbert space argument.
b) For integral RVs (L1, a bigger class) via Radon-Nikodym—harder!
But (a) can actually prove (b)!
a) For square-integrable RVs (L2) via a super easy Hilbert space argument.
b) For integral RVs (L1, a bigger class) via Radon-Nikodym—harder!
But (a) can actually prove (b)!
Everywhere I go, children gleefully throw things at me
June 20, 2025 at 2:42 PM
Everywhere I go, children gleefully throw things at me
Seeing how my kids fare in racing other kids at the playground is a VERY clear paternity test
June 13, 2025 at 10:16 PM
Seeing how my kids fare in racing other kids at the playground is a VERY clear paternity test
During grad school, saw Bob Balaban three times in NYC, in three different neighborhoods. Once in a cafe, once on a bus, once on a subway.
Right folks. Feeling rather down at the moment so bringing back an oldie
Please Quote this with your most minor celebrity interaction
Please Quote this with your most minor celebrity interaction
June 13, 2025 at 6:41 PM
During grad school, saw Bob Balaban three times in NYC, in three different neighborhoods. Once in a cafe, once on a bus, once on a subway.
Wanted: a program that will read me a mathematical paper in audio. Obviously best if it’s smart about (e.g.) when the symbol “X” should be pronounced “ex” and when it should be pronounced “big ex”. Has anyone in our brave new LLM world made this?
June 7, 2025 at 11:49 PM
Wanted: a program that will read me a mathematical paper in audio. Obviously best if it’s smart about (e.g.) when the symbol “X” should be pronounced “ex” and when it should be pronounced “big ex”. Has anyone in our brave new LLM world made this?
When you ask a computer scientist to tell you their model
Q: Does the White House have a reaction to the election in South Korea?
LEAVITT: Yes, we do. Let me find it for you. Thank you. Um. We do not.
LEAVITT: Yes, we do. Let me find it for you. Thank you. Um. We do not.
June 4, 2025 at 1:21 AM
When you ask a computer scientist to tell you their model
Does anybody else sometimes try to reprove math results they've "known" for years just to feel something?
May 16, 2025 at 1:40 PM
Does anybody else sometimes try to reprove math results they've "known" for years just to feel something?
Fun, easy-but-a-bit-surprising #mathsky fact: there's no way to describe the complex-to-complex exponentiation function in terms of {0,1,+,x,<, and, or, not, exists} and the real-to-real exponential function.
May 15, 2025 at 4:43 PM
Fun, easy-but-a-bit-surprising #mathsky fact: there's no way to describe the complex-to-complex exponentiation function in terms of {0,1,+,x,<, and, or, not, exists} and the real-to-real exponential function.
Reposted by Elliot Lipnowski
Whether it’s Barack Obama wearing a tan suit to a press conference or Donald Trump running a multi-billion dollar crypto scam from the White House, both men tested the limits of presidential propriety.
May 15, 2025 at 2:36 AM
Whether it’s Barack Obama wearing a tan suit to a press conference or Donald Trump running a multi-billion dollar crypto scam from the White House, both men tested the limits of presidential propriety.
The average American has three friends
May 3, 2025 at 3:46 AM
The average American has three friends