Mari

Pure Maths and Physics

[Mari @MathyMari]

@TheWookieDavid @BowToChris @Simmy16242170 @Fish_CTO i do not call a torus a donut ever, except maybe when explaining the shape to someone for the first time .

no i don't bother correcting people on it because it's not usually relevant

yes i think the original joke is funny

[Mari @MathyMari]

@AtheyBng @BowToChris @Simmy16242170 @Fish_CTO no, a sphere (specifically, the surface is the sphere so it is "hollow") is never able to be homotopied to a point . the 0D sphere can maybe be thought of as a point but that isn't the intended topic here

[Mari @MathyMari]

@TheWookieDavid @BowToChris @Simmy16242170 @Fish_CTO a sphere is hollow. I consider donut a sphere since inside is fluffy. outside of infinite dimensions, the best analogy for the incontractibility of a sphere is that it has to rip itself to shrink to a point. for a ball, no such rip occurs

[Mari @MathyMari]

@memcculloch I'm curious, why do you stick to quantised inertia so much?

[Mari @MathyMari]

@ChroniclesOf23 @mathemetica hey i checked this and it doesnt work sorry 😞

[Mari @MathyMari]

@summer_prodigy @BowToChris @Simmy16242170 @Fish_CTO Yeah, when we first discussed the axiom of choice in my topology class (in regards to the construction of the product topology) my lecturer said "if we walk into a shop with uncountably many jars of candy that can have a finite or infinite amount of candy, can we pick a jar

[Mari @MathyMari]

@TheWookieDavid @BowToChris @Simmy16242170 @Fish_CTO You may be confusing balls and spheres.

[Mari @MathyMari]

@TheWookieDavid @BowToChris @Simmy16242170 @Fish_CTO A sphere is not a point. A sphere contains a 3d volume and cannot be homotopied to a point :)

[Mari @MathyMari]

@nyah_hah @BowToChris @Simmy16242170 @Fish_CTO i agree
donut is a food not a shape

[Mari @MathyMari]

@awildbread @BowToChris @Simmy16242170 @Fish_CTO any convex set can be homotopied to a point

[Mari @MathyMari]

@awildbread @BowToChris @Simmy16242170 @Fish_CTO depends, if the mug isnt hollow then you can homotopy it into a disk, and disks are points

[Mari @MathyMari]

@nyah_hah @BowToChris @Simmy16242170 @Fish_CTO donut is a food you eat. torus is shape. donut 🥯 like this is torus. jam donut is sphere

[Mari @MathyMari]

@nyah_hah @BowToChris @Simmy16242170 @Fish_CTO hole where

[Mari @MathyMari]

@jeanpaulblartre @BowToChris @Simmy16242170 @Fish_CTO wait who are you disagreeinh with

[Mari @MathyMari]

@BowToChris @Simmy16242170 @Fish_CTO that is a sphere

[Mari @MathyMari]

@SierraHotel28 @mathandcobb I disagree actually, I think the RH is one of the easiest popular problems (keeping in mind, this is still an extraordinary level of difficulty and I am talking about relative difficulty)

[Mari @MathyMari]

Feynman was the first ragebaiter

[Philosophy Of Physics @PhilosophyOfPhy]

"If all of mathematics disappeared, physics would be set back by exactly one week."

- Richard P. Feynman

[Mari @MathyMari]

@Richarduels @mathandcobb not to mention that the paper uses these positive and negative infinities (which is fine on the real plane (or at least, less questionable)) but a disaster on the complex plane.

[Mari @MathyMari]

@Richarduels @mathandcobb yes this was precisely my point, perhaps the term positive was poorly used here (i meant it in the sense that there is no "negative infinity")

when we deal with this infinity, if we have that the function is differentiable at infinity, there are problems. if it is not, problems.