Mark Dominus @mjd@mathstodon.xyz

YOU MATHEMATICIANS THINK YOU SO SMART, THAN EXPLAIN THIS!!1!

New math post on my blog: Annoying mathematical notation https://blog.plover.com/math/notation-2.html

New math post on my blog: A proposal for improved language around divisibility https://blog.plover.com/math/divisibility-terminology.html

New math post on my blog: Testing for divisibility by 8 https://blog.plover.com/math/divisibility-by-8.html

New math post on my blog: The squares are kinda fibonacci-like https://blog.plover.com/math/fibonacci-squares.html

New math post on my blog: Many presentations of axiomatic set theory contain an error https://blog.plover.com/math/jech.html

New math post on my blog: Another test for divisibility by 7 https://blog.plover.com/math/divisibility-by-7-2.html

New math post on my blog: All polynomials of degree 3 or greater factor over the reals https://blog.plover.com/math/quartics-factor.html

New math post on my blog: A little more about the pedagogy of what it means to be transcendental https://blog.plover.com/math/se/transcendental-2.html

New math post on my blog: Consecutive squareful numbers https://blog.plover.com/math/consecutive-squarefull.html

New math post on my blog: In simple English, what does it mean to be transcendental? https://blog.plover.com/math/se/transcendental.html

Are you familiar with the term “recitation” which means “a small discussion class concentrating on material presented in a larger lecture; a section.”? (Please RT.)

“My big mistake about dense sets”: For forty years I believed something about dense sets that wasn't true. https://blog.plover.com/math/dense-sets.html Thanks Noah Schweber!

“A simple dice-throwing game that seems hard to play” https://blog.plover.com/math/dice-game.html : start with a pool of _n_ points; choose a 4-, 6-, or 8-dided die, throw it, subtract from your points pool. If the pool reaches 0 exactly, you win; less than 0 you lose. What's the optimal strategy and its chance of winning?

Math Stack Exchange followup discussion: https://math.stackexchange.com/q/4192238/25554

“The convergents of 2x” https://blog.plover.com/math/double-convergents.html

“Why is the S combinator an S?” (Historical investigation; the S does not appear to have anything to do with substitution.) https://blog.plover.com/math/combinator-s.html

“On having the right theorem”: every permutation of the English alphabet contains a subsequence of six letters in order. Dilworth's theorem squashes this flat. https://blog.plover.com/math/dilworth.html

“Simplest example of Simpson's paradox” https://blog.plover.com/math/simpson-paradox.html

“Stack Exchange is a good place to explain initial and terminal objects in the category of sets”

https://blog.plover.com/math/se/initial-and-terminal-sets.html

Also here's an example of a simple-seeming claim I said was obviously true, but was actually completely false: https://blog.plover.com/oops/wiener-pairs-4.html