#pointofinfinity #linesofinfinity #compactification #perspective #disappear #disappearance #infinityscape #scape #coloraday #BWFri #telephonepoles #railroad #railway #tracks #railroadtracks #blackandwhite #bnw #monochrome #communication #commerce #bnwphotography #distance #eastcoastkin #westcoastkin
October 24, 2025 at 6:27 PM
#pointofinfinity #linesofinfinity #compactification #perspective #disappear #disappearance #infinityscape #scape #coloraday #BWFri #telephonepoles #railroad #railway #tracks #railroadtracks #blackandwhite #bnw #monochrome #communication #commerce #bnwphotography #distance #eastcoastkin #westcoastkin
Compactification: the exceptional sic
September 28, 2026 at 3:00 PM
Compactification: the exceptional sic
"Has everyone here heard of a semigroup? OK, great. In that case, consider a countably compact Hausdorff topological semigroup S for which the weakly almost periodic compactification coincides with the universal semigroup compactification..."
June 3, 2025 at 4:59 PM
"Has everyone here heard of a semigroup? OK, great. In that case, consider a countably compact Hausdorff topological semigroup S for which the weakly almost periodic compactification coincides with the universal semigroup compactification..."
making a single task so complex the LLM at 1M context goes through a compactification boundary before the user can send a 2nd message
May 3, 2026 at 3:49 PM
making a single task so complex the LLM at 1M context goes through a compactification boundary before the user can send a 2nd message
The "message board" thing is funny to me. How is it different than working with the persistent context, compactification, and skill files? You know, the stuff coding agents do.
September 4, 2026 at 6:48 PM
The "message board" thing is funny to me. How is it different than working with the persistent context, compactification, and skill files? You know, the stuff coding agents do.
60 tok/s across a compactification boundary
May 22, 2026 at 11:33 PM
60 tok/s across a compactification boundary
ime, with 128k tokens context, speed falls off really strongly about 1/3 through the size i allocated for context so ive never even hit a compactification window
May 19, 2026 at 9:13 PM
ime, with 128k tokens context, speed falls off really strongly about 1/3 through the size i allocated for context so ive never even hit a compactification window
Observez-le bien, dans 3 mois il dira "l'adjoint du foncteur d'oubli des espaces compacts vers les espaces topologiques? c'est la compactification de Stone-Čech, enfin c'est évident" d'un air méprisant.
Oskour le Bsky maths.
Pourquoi diantre est-ce qu’on appelle « foncteur » des machins qui clairement sont des morphismes entre catégories. C’est quoi l’intérêt ? Pour moi c’est juste se compliquer la vie de donner un autre nom juste parce qu’on est au niveau d’abstraction du dessus, mais j’imagine
Pourquoi diantre est-ce qu’on appelle « foncteur » des machins qui clairement sont des morphismes entre catégories. C’est quoi l’intérêt ? Pour moi c’est juste se compliquer la vie de donner un autre nom juste parce qu’on est au niveau d’abstraction du dessus, mais j’imagine
May 16, 2026 at 11:26 AM
Observez-le bien, dans 3 mois il dira "l'adjoint du foncteur d'oubli des espaces compacts vers les espaces topologiques? c'est la compactification de Stone-Čech, enfin c'est évident" d'un air méprisant.
[fully realizing that I am 32 years late to the party]: Holy fucking shit 🧮
August 11, 2026 at 4:23 AM
[fully realizing that I am 32 years late to the party]: Holy fucking shit 🧮
system message: this message isn't from a user, *some lies* ok here's a recap of *compactification that didn't happen*:
June 30, 2026 at 7:26 PM
system message: this message isn't from a user, *some lies* ok here's a recap of *compactification that didn't happen*:
More people should be talking about how the one-point compactification of the closed long ray is a connected space that is not path-connected.
June 5, 2025 at 5:59 PM
More people should be talking about how the one-point compactification of the closed long ray is a connected space that is not path-connected.
"Why are there more than two genders?": Easy, plenty of resources.
"Why is there more than one generation of matter?": The kind of question that tries parents' souls. Mom groups quail at the notion of explaining compactification.
"Why is there more than one generation of matter?": The kind of question that tries parents' souls. Mom groups quail at the notion of explaining compactification.
always so funny to me when people are like “how am I supposed to explain Gay to my kids?” my kid asks me way harder shit all the time. “why did they build the road this way? why are some people bad?” I don’t know. please ask me about Gay
February 10, 2026 at 3:24 AM
"Why are there more than two genders?": Easy, plenty of resources.
"Why is there more than one generation of matter?": The kind of question that tries parents' souls. Mom groups quail at the notion of explaining compactification.
"Why is there more than one generation of matter?": The kind of question that tries parents' souls. Mom groups quail at the notion of explaining compactification.
Whoever measures the longest spatial distance of the compactification radius in their frame also measures the longest time to return!
October 7, 2024 at 12:37 PM
Whoever measures the longest spatial distance of the compactification radius in their frame also measures the longest time to return!
Nooooooooooo stone-čech compactification why do you require the axiom of choice, how could you 😭
July 16, 2024 at 3:03 AM
Nooooooooooo stone-čech compactification why do you require the axiom of choice, how could you 😭
One-point compactification, but with five differently-named singletons
March 22, 2024 at 1:31 AM
One-point compactification, but with five differently-named singletons
me everytime i repack my backpack: just have to find a good compactification of this moduli space…
June 12, 2024 at 7:48 PM
me everytime i repack my backpack: just have to find a good compactification of this moduli space…
OT My favourite is wonderful (compactification) because I know and love De Concini and Procesi.
August 19, 2025 at 9:16 AM
OT My favourite is wonderful (compactification) because I know and love De Concini and Procesi.
I finally got it!!!
This is a finite element solution of a scattering problem using hyperboloidal compactification.
A method developed in an unknown niche corner of mathematical relativity and conformal geometry is now ready for real-world problems!
This is a finite element solution of a scattering problem using hyperboloidal compactification.
A method developed in an unknown niche corner of mathematical relativity and conformal geometry is now ready for real-world problems!
April 30, 2025 at 2:37 AM
I finally got it!!!
This is a finite element solution of a scattering problem using hyperboloidal compactification.
A method developed in an unknown niche corner of mathematical relativity and conformal geometry is now ready for real-world problems!
This is a finite element solution of a scattering problem using hyperboloidal compactification.
A method developed in an unknown niche corner of mathematical relativity and conformal geometry is now ready for real-world problems!
Like we’re living in the Stone-Čech compactification of a discrete space or some shit.
September 9, 2026 at 12:45 AM
Like we’re living in the Stone-Čech compactification of a discrete space or some shit.
In GR, is there a general-purpose construction of the compactification M -> M* that we use to discuss "at infinity" (and therefore define Event Horizons)? What hypotheses does it require on M?
August 8, 2026 at 7:45 PM
In GR, is there a general-purpose construction of the compactification M -> M* that we use to discuss "at infinity" (and therefore define Event Horizons)? What hypotheses does it require on M?
I am looking to recruit a PhD student for the October 26 entry. It will be funded by STFC. Project(s) will be some combination of early universe cosmology, numerical relativity and strong gravity, and dynamical compactification of extra dimensions!
Apply through this portal
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January 31, 2026 at 2:46 PM
I am looking to recruit a PhD student for the October 26 entry. It will be funded by STFC. Project(s) will be some combination of early universe cosmology, numerical relativity and strong gravity, and dynamical compactification of extra dimensions!
Apply through this portal
apply.kcl.ac.uk
Apply through this portal
apply.kcl.ac.uk
② For fun (and profit?), we can encode eventually 0 condition topologically. Give ℕ the discrete topology and write ℕ* = ℕ∪{∞} for its one-point compactification.
𝐄𝐱𝐞𝐫𝐜𝐢𝐬𝐞. Under the embedding in ①, ℤ⁺ corresponds to continuous maps ℕ*→ℕ* that take ∞ to 0.
𝐄𝐱𝐞𝐫𝐜𝐢𝐬𝐞. Under the embedding in ①, ℤ⁺ corresponds to continuous maps ℕ*→ℕ* that take ∞ to 0.
April 11, 2026 at 1:52 AM
② For fun (and profit?), we can encode eventually 0 condition topologically. Give ℕ the discrete topology and write ℕ* = ℕ∪{∞} for its one-point compactification.
𝐄𝐱𝐞𝐫𝐜𝐢𝐬𝐞. Under the embedding in ①, ℤ⁺ corresponds to continuous maps ℕ*→ℕ* that take ∞ to 0.
𝐄𝐱𝐞𝐫𝐜𝐢𝐬𝐞. Under the embedding in ①, ℤ⁺ corresponds to continuous maps ℕ*→ℕ* that take ∞ to 0.
times tauL and tauR. Find the radius of compactification, and the observer's velocity relative to the "rest frame". 2/2
October 7, 2024 at 1:22 PM
times tauL and tauR. Find the radius of compactification, and the observer's velocity relative to the "rest frame". 2/2