Do not inflict combinatorics upon me in my free time
November 2, 2026 at 6:27 PM
Do not inflict combinatorics upon me in my free time
(Also, additive combinatorics is ugly don't @ me.)
October 28, 2026 at 8:02 PM
(Also, additive combinatorics is ugly don't @ me.)
[2026-11-02 Mon (UTC), 51 new articles found for mathCO Combinatorics]
November 2, 2026 at 6:46 AM
[2026-11-02 Mon (UTC), 51 new articles found for mathCO Combinatorics]
woah, agent doing combinatorics in the chat multiple calls in a row like it's a Jupyter NB
October 30, 2026 at 8:35 AM
woah, agent doing combinatorics in the chat multiple calls in a row like it's a Jupyter NB
attempting to do combinatorics without looking anything up because I passed logic and CS theory, goddamnit! I should be perfectly capable of this
October 30, 2026 at 10:50 PM
attempting to do combinatorics without looking anything up because I passed logic and CS theory, goddamnit! I should be perfectly capable of this
but it is equally weird to be hostile towards criticisms that have led to interesting directions from smoothed analysis to analytic combinatorics! esp. since there is plenty of interesting work to be done here too!
October 31, 2026 at 3:56 PM
but it is equally weird to be hostile towards criticisms that have led to interesting directions from smoothed analysis to analytic combinatorics! esp. since there is plenty of interesting work to be done here too!
caffeine helps me but
does it *help* me?
does it help *me*?
does... ok NO SOPHIE U DO NOT NEED OT DO COMBINATORICS SHITPOSTS
does it *help* me?
does it help *me*?
does... ok NO SOPHIE U DO NOT NEED OT DO COMBINATORICS SHITPOSTS
October 30, 2026 at 5:12 PM
caffeine helps me but
does it *help* me?
does it help *me*?
does... ok NO SOPHIE U DO NOT NEED OT DO COMBINATORICS SHITPOSTS
does it *help* me?
does it help *me*?
does... ok NO SOPHIE U DO NOT NEED OT DO COMBINATORICS SHITPOSTS
_
Cycle Evaluation Theorem
for the very few people that ever wondered WHY Plethystic Substitution (in Combinatorics) works.
Cycle Evaluation Theorem
for the very few people that ever wondered WHY Plethystic Substitution (in Combinatorics) works.
November 2, 2026 at 9:03 PM
_
Cycle Evaluation Theorem
for the very few people that ever wondered WHY Plethystic Substitution (in Combinatorics) works.
Cycle Evaluation Theorem
for the very few people that ever wondered WHY Plethystic Substitution (in Combinatorics) works.
The ideas that lie behind the sub exponential algorithms, both in combinatorics and number theory are interesting, whether or not they can be effectively implemented. This area of implementation is what I think Recht is pointing to.
November 1, 2026 at 4:10 AM
The ideas that lie behind the sub exponential algorithms, both in combinatorics and number theory are interesting, whether or not they can be effectively implemented. This area of implementation is what I think Recht is pointing to.
Completely different thing from the movie is, I don't think the problem on the chalkboard was a "take all semester to answer" level of difficulty. I could be wrong since I haven't taken combinatorics, but it seemed fairly straightforward
(Also also listing answers isnt a proof. Proofs have grammar)
(Also also listing answers isnt a proof. Proofs have grammar)
October 29, 2026 at 8:37 PM
Completely different thing from the movie is, I don't think the problem on the chalkboard was a "take all semester to answer" level of difficulty. I could be wrong since I haven't taken combinatorics, but it seemed fairly straightforward
(Also also listing answers isnt a proof. Proofs have grammar)
(Also also listing answers isnt a proof. Proofs have grammar)
My “writing code for fun after my day of writing code for money” project that I exclusively work on while stoned is making me relearn a lot of stuff about combinatorics and I don’t like it.
October 29, 2026 at 12:04 AM
My “writing code for fun after my day of writing code for money” project that I exclusively work on while stoned is making me relearn a lot of stuff about combinatorics and I don’t like it.
Achintya Dey: Systolic Geometry and Combinatorics of Surfaces https://arxiv.org/abs/2610.40750 https://arxiv.org/pdf/2610.40750 https://arxiv.org/html/2610.40750
November 2, 2026 at 6:48 AM
Achintya Dey: Systolic Geometry and Combinatorics of Surfaces https://arxiv.org/abs/2610.40750 https://arxiv.org/pdf/2610.40750 https://arxiv.org/html/2610.40750
The next special days of Combinatorics, Physics and their Interactions will take place at IHES on 26-27 Nov. 2026. LIPN and the MathSTIC foundation are among the sponsors. Do not hesitate to come!
👉 CAP26 webpage: lipn.univ-paris13.fr/~duchamp/Con...
👉 Registration: indico.math.cnrs.fr/event/17588/
👉 CAP26 webpage: lipn.univ-paris13.fr/~duchamp/Con...
👉 Registration: indico.math.cnrs.fr/event/17588/
Combinatorics and Arithmetic for Physics
Combinatorics and Arithmetic for PhysicsThe meeting’s focus is about questions of discrete mathematics and number theory with an emphasis on computability. Problems are drawn mainly from theoretical p...
indico.math.cnrs.fr
November 2, 2026 at 4:15 PM
The next special days of Combinatorics, Physics and their Interactions will take place at IHES on 26-27 Nov. 2026. LIPN and the MathSTIC foundation are among the sponsors. Do not hesitate to come!
👉 CAP26 webpage: lipn.univ-paris13.fr/~duchamp/Con...
👉 Registration: indico.math.cnrs.fr/event/17588/
👉 CAP26 webpage: lipn.univ-paris13.fr/~duchamp/Con...
👉 Registration: indico.math.cnrs.fr/event/17588/
We keep hosting events with neat pairs of diplomats—like amb. of Albania to Qatar, amb. of Serbia to Pakistan, etc—so I wondered how many potential ambassadors there might be. bc I'm bad at combinatorics, I brute forced it with #rstats, assuming 195 countries that all like each other
Nearly 38,000!
Nearly 38,000!
![library(tidyverse)
dyads <- expand_grid(country_a = 1:195, country_b = 1:195) |>
filter(country_a != country_b)
nrow(dyads)
#> [1] 37830](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:2zcfjzyocp6kapg6jc4eacok/bafkreigzt4widhrrbadw2ccgv2ccc7wvvltaqnjb5xcsee5qy6u366gs6a)
October 29, 2026 at 9:44 AM
We keep hosting events with neat pairs of diplomats—like amb. of Albania to Qatar, amb. of Serbia to Pakistan, etc—so I wondered how many potential ambassadors there might be. bc I'm bad at combinatorics, I brute forced it with #rstats, assuming 195 countries that all like each other
Nearly 38,000!
Nearly 38,000!
[2026-10-30 Fri (UTC), 78 new articles found for mathCO Combinatorics]
October 30, 2026 at 6:46 AM
[2026-10-30 Fri (UTC), 78 new articles found for mathCO Combinatorics]
[2026-10-29 Thu (UTC), no new articles found for mathCO Combinatorics]
October 29, 2026 at 6:52 AM
[2026-10-29 Thu (UTC), no new articles found for mathCO Combinatorics]
Haha yes, the brackets were only to point out the obvious. But they’d been at it for a few months, with various problems in graph combinatorics etc.
October 27, 2026 at 2:56 AM
Haha yes, the brackets were only to point out the obvious. But they’d been at it for a few months, with various problems in graph combinatorics etc.
i'm being facetious here - i find it fun to refer to the study of semiotics (studying meaning, interpretation, etc) as "learning how to read" because the phrase broadly describes what is being done but sounds rather basic and silly. i do the same thing when i call combinatorics "learning to count."
October 29, 2026 at 1:32 PM
i'm being facetious here - i find it fun to refer to the study of semiotics (studying meaning, interpretation, etc) as "learning how to read" because the phrase broadly describes what is being done but sounds rather basic and silly. i do the same thing when i call combinatorics "learning to count."
AGC (Algebra, Geometry and Combinatorics) Seminar: Monday, November 2, 2026, at 14.15. Elli Karvonen: Unveiling the shapes of data. Aalto University, Undergraduate Centre (Otakaari 1), room M3 (M234). https://math.aalto.fi/en/research/discrete/seminars/agc/
Aalto SCI MS AGC
math.aalto.fi
November 2, 2026 at 8:10 AM
AGC (Algebra, Geometry and Combinatorics) Seminar: Monday, November 2, 2026, at 14.15. Elli Karvonen: Unveiling the shapes of data. Aalto University, Undergraduate Centre (Otakaari 1), room M3 (M234). https://math.aalto.fi/en/research/discrete/seminars/agc/
SETS AND COMBINATORICS IN R: A COMPUTATIONAL EXPLORATION OF THE CARTESIAN PRODUCT, THE POWER SET, PERMUTATIONS, AND COMBINATIONS
This article argues that R provides an accessible laboratory for studying finite set constructions by…
#PoliticalEconomy #Marxism #Geopolitics #OpenScience
This article argues that R provides an accessible laboratory for studying finite set constructions by…
#PoliticalEconomy #Marxism #Geopolitics #OpenScience
SETS AND COMBINATORICS IN R: A COMPUTATIONAL EXPLORATION OF THE CARTESIAN PRODUCT, THE POWER SET, PERMUTATIONS, AND COMBINATIONS
This article argues that R provides an accessible laboratory for studying finite set constructions by distinguishing mathematical objects from computational representations. It examines Cartesian products, power sets, permutations, and combinations while clarifying the role of…
marxistphilosophyofscience.com
November 2, 2026 at 2:37 AM
SETS AND COMBINATORICS IN R: A COMPUTATIONAL EXPLORATION OF THE CARTESIAN PRODUCT, THE POWER SET, PERMUTATIONS, AND COMBINATIONS
This article argues that R provides an accessible laboratory for studying finite set constructions by…
#PoliticalEconomy #Marxism #Geopolitics #OpenScience
This article argues that R provides an accessible laboratory for studying finite set constructions by…
#PoliticalEconomy #Marxism #Geopolitics #OpenScience
[2026-10-28 Wed (UTC), 43 new articles found for mathCO Combinatorics]
October 28, 2026 at 6:46 AM
[2026-10-28 Wed (UTC), 43 new articles found for mathCO Combinatorics]
Le congrès Combinatorics, Physics and their Interactions (CAP26) se déroulera les 26-27/11/26 à l'IHES. Le LIPN et la fédération MathSTIC font partie des sponsors, n'hésitez pas à vous inscrire !
👉 Page du congrès lipn.univ-paris13.fr/~duchamp/Con...
👉 Inscription indico.math.cnrs.fr/event/17588/
👉 Page du congrès lipn.univ-paris13.fr/~duchamp/Con...
👉 Inscription indico.math.cnrs.fr/event/17588/
November 2, 2026 at 3:54 PM
Le congrès Combinatorics, Physics and their Interactions (CAP26) se déroulera les 26-27/11/26 à l'IHES. Le LIPN et la fédération MathSTIC font partie des sponsors, n'hésitez pas à vous inscrire !
👉 Page du congrès lipn.univ-paris13.fr/~duchamp/Con...
👉 Inscription indico.math.cnrs.fr/event/17588/
👉 Page du congrès lipn.univ-paris13.fr/~duchamp/Con...
👉 Inscription indico.math.cnrs.fr/event/17588/
I’ll talk about this more and cite my sources in the blog post, but I’ve come to the conclusion for a few years now that there’s no such thing as an original idea: it’s all combinatorics the whole way down, going back to early humanity
November 2, 2026 at 4:46 PM
I’ll talk about this more and cite my sources in the blog post, but I’ve come to the conclusion for a few years now that there’s no such thing as an original idea: it’s all combinatorics the whole way down, going back to early humanity
👇 Answer: https://c.1lll.workers.dev/pwV9HAJE
The River Crossing Dilemma
A farmer must cross a river with a fox, a goose, and grain in a boat that carries only one item. If ...
#RiverCrossing #ClassicPuzzle #LogicRiddle #Combinatorics #BrainTeaser #Quiz
The River Crossing Dilemma
A farmer must cross a river with a fox, a goose, and grain in a boat that carries only one item. If ...
#RiverCrossing #ClassicPuzzle #LogicRiddle #Combinatorics #BrainTeaser #Quiz
November 1, 2026 at 3:31 PM
👇 Answer: https://c.1lll.workers.dev/pwV9HAJE
The River Crossing Dilemma
A farmer must cross a river with a fox, a goose, and grain in a boat that carries only one item. If ...
#RiverCrossing #ClassicPuzzle #LogicRiddle #Combinatorics #BrainTeaser #Quiz
The River Crossing Dilemma
A farmer must cross a river with a fox, a goose, and grain in a boat that carries only one item. If ...
#RiverCrossing #ClassicPuzzle #LogicRiddle #Combinatorics #BrainTeaser #Quiz
New release: Problems for School Mathematics Circles. 🔥🔥
🔥
Explore 271 challenging problems in logic, geometry, combinatorics, number theory, and olympiad mathematics—with hints, answers, and detailed solutions.
valeman.gumroad.com/...
🔥
Explore 271 challenging problems in logic, geometry, combinatorics, number theory, and olympiad mathematics—with hints, answers, and detailed solutions.
valeman.gumroad.com/...
October 29, 2026 at 4:30 PM
New release: Problems for School Mathematics Circles. 🔥🔥
🔥
Explore 271 challenging problems in logic, geometry, combinatorics, number theory, and olympiad mathematics—with hints, answers, and detailed solutions.
valeman.gumroad.com/...
🔥
Explore 271 challenging problems in logic, geometry, combinatorics, number theory, and olympiad mathematics—with hints, answers, and detailed solutions.
valeman.gumroad.com/...