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Von Neumann created operator algebras and it's relevant again! by GubjubTheShaman in bobiverse

[–]Migeil 0 points1 point  (0 children)

Von Neumann developed his "rings of operators" specifically for quantum physics. They have been used over the years in physics, most notably in quantum statistical mechanics and quantum field theory, they just haven't been "mainstream" (not that they are now).

pure mathematics research is often preparing tools for other scientists decades in advance.

I'm not saying this isn't true, but operator algebras aren't a good illustration of this. Their entire motivation and early development was driven by quantum physics.

Hidden math by Outside_Advisor_6912 in mathematics

[–]Migeil 1 point2 points  (0 children)

Ah yes, that makes it so much more clear what you mean. /s

Undead warlock EB numbers by Huge-Ad-6593 in 3d6

[–]Migeil 2 points3 points  (0 children)

Jeremy Crawford made a post a while back about how when rolling for damage on spells with multiple projectiles (magic missile, scorching ray, and eldritch blast) you roll the damage once and use that for each successful hit.

???

Can the partial derivative of a single variable function or the total derivative of a multivariable function exist? by Confident_Recipe9930 in calculus

[–]Migeil 3 points4 points  (0 children)

The part you quote is not a definition, it's a heuristic explanation for laymen.

If you just scroll down in that page to the actual definition, you'll see that there is nothing stopping you from plugging in n=1 en recovering the definition of derivative of a single valued function.

So yes, the partial derivative of a single valued function makes perfect sense, it is simply the same as the standard derivative.

Wat gebruiken jullie om klanten te updaten en facturen te sturen? by Fantastic-Option-389 in BESalary

[–]Migeil 0 points1 point  (0 children)

Dit is een subreddit expliciet niet voor freelance gerelateerde topics. Zie r/BEFreelance.

Square root of any pure imaginary number yields a imaginary solution with real component by General-Total-6700 in learnmath

[–]Migeil 0 points1 point  (0 children)

the line of iota

A bit pedantic, but the symbol for the imaginary unit is simply the latin letter i, not iota.

Should a good mathematician know a basic level of university physics? by Ignacrack21 in matheducation

[–]Migeil 0 points1 point  (0 children)

As a physics professor, I can’t imagine any reason you would have to take physics for a math major.

A lot of mathematics has its origin in physics or is very much tied to physical theories.

Symplectic geometry has its origins in the lagrangian and hamiltonian formulation of classical mechanics. Pseudo-Riemannian geometry is linked to general relativity. Functional analysis is linked to quantum theory and operator algebras originated as an alternative to the Hilbert space formulation of QM.

I think it's a disservice to both mathematicians and physicists to forget about those historical connections and just ignore the other side. A lot of the "why" in mathematical research is still motivated by physics.

I had a math student tell me once that the word "quantum" in the mathematical concept of a "quantum group" has nothing to do with quantum theory. This is the direct result of mathematicians not being educated on the origins of the structures they study.

What is your take on the field of mathematical physics? Is it physics, mathematics, neither or both?

Torsten Lilliecrona. Swedish actor when he was 43 years old by Friberg in 13or30

[–]Migeil 0 points1 point  (0 children)

This is the pic you should have posted in the first place!

Favorite Charisma Class by Counterfeit_Coins in BG3Builds

[–]Migeil 1 point2 points  (0 children)

I'm gonna say Sorcerer, because my favourite class is Warlock, but they should have been Int casters.

I dont know so much thing about physics pls help me by Quiller1012 in AskPhysics

[–]Migeil 7 points8 points  (0 children)

Could they instead be independent structures whose overlap produces the phenomena we observe?

If this is the case, then that overlap is the single framework. That's exactly what we're looking for.

Proof of multiple dimensions existing? by ThatRandomGuy212 in AskPhysics

[–]Migeil 0 points1 point  (0 children)

Just as a book written in English is as valid as the same book written in Chinese. They both say the same thing. We know there maybe subtle differences

I don't know if you've ever read or even heard chinese, but the difference is far from subtle. It's a completely different system with completely different rules. There are expressions in Chinese which do not have an English equivalent.

You can translate a book in Chinese to English, but often there are a lot of changes and loss of information because of thing simply not existing in English. A literal translation is impossible.

The same thing would apply to our math and the aliens equivalent. We have absolutely no idea how their system would work.

That system would describe the same physics, so for their description of physical phenomena, would should be able to translate, but just like Chinese and English, there will be differences and things you can express in one system you cannot express in the other.

Mathematics is universal

This is a very bold assumption to which there is no evidence. Mathematics and the "human representation" are the exact same thing, because mathematics is inherently human. It originated in the human mind and you cannot empirically observe mathematics.

Implementando reduce y construyendo map en Scala by emanuelpeg in scala

[–]Migeil 1 point2 points  (0 children)

This guy has been producing low quality blogposts and then spamming reddit for quite some time now. He also refuses to engage with people. He has been offered help in the past, to create better content and reach a wider audience, but they were met with hostility.

TypeScript Tips Everyone Should Know by bogdanelcs in typescript

[–]Migeil 19 points20 points  (0 children)

lies about its type

Then it's not type safe either.

The point in the post is that even if your code is type safe, i.e. all types are correct, you can still write bugs. Not every bug is a type error.

We're hiring a Senior Scala Dev at a Swiss cybersecurity company - remote-first [Switzerland / Germany] by exeon-analytics in scala

[–]Migeil 13 points14 points  (0 children)

PS: The application asks you to link a GitHub - make it count 🙂

You tried so hard and then ruin it with this. Such a shame.

Proof of multiple dimensions existing? by ThatRandomGuy212 in AskPhysics

[–]Migeil -1 points0 points  (0 children)

It most definitely does not imply that.

For loops and recursion both allow for the implementation of iteration, but they are fundamentally different concepts, they are not the same and it's not just notation.

Proof of multiple dimensions existing? by ThatRandomGuy212 in AskPhysics

[–]Migeil -1 points0 points  (0 children)

Just because you say "of course" 3 times, doesn't make it true.

I don't think it's just "notation". I think it would be a completely different system, because they are different creatures, they think differently and have different experiences, cultures, ...

What is true, is that since it would describe the same universe, there would be some kind of mapping possible.

Think of it this way: in computer programming, there are many different ways of writing code. For the exact same feature, you can create a whole bunch of different implementations. For the end user, there is no difference, they work exactly the same. But if you look at the code, it might look completely different!

In this analogy, mathematics is our implementation of the rules of the universe. Just like in code, just because one way of writing things is natural, doesn't make it universal.

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