@vzn I know, right? Even the creators of Leela Chess Zero claim to only have read the AlphaZero paper, and gleaned everything that they needed from there.

There are a couple of open-source MuZero clones out there, but they don't seem to be very popular/fast/general

Can you explain me $r_{A}$

What is this A?

Also where is this formula coming from suddenly?

I really do notunderstand..I get an intuition that this is somehow related to the heat transfer equation as well

But a detailed mentorship is most certainly welcome

@bolbteppa thx for asking! it would take awhile to explain, its some new ideas mixed with existing work. think its promising. its about a return to basics. about adopting some new terminology, but not new words. hint, think it starts with "clicks" mentioned in a few various papers eg arxiv.org/abs/1601.03715 arxiv.org/abs/1707.08915 will try to line up with you or someone else on here sometime when youre free + have some spare time... just keep in mind it requires an open mind :)

@NiharKarve have you looked into/ played with some of the open source stuff yourself? whats your take on how deepmind is(nt) encouraging outside work on their systems? it seems like they are all about building on other open systems eg the game simulators or other code in the field such as prior AI algorithms/ benchmarks, but not really about releasing much into open source themselves... do they release much, if anything? if so it seems to be very low profile :(

Hi All.

Hi @JohnRennie sir. Pls see question yesterday above feww comments above.

Pls explain this phenomenon of torque of rectangular coil in uniform magnetic field.

My question is that book and Google does not talk about reason of torque. What I think it is due to interaction between coil magnetic field and external uniform magnetic field.

None of the picture and article I found which explains this phenomenon using coil magnetic field vector and add to the external uniform magnetic vector. Which get Resultant vector makes rotation/moment in coil.

Pls explain. Also book says number of turn in coil. What kind of turn it is, does it solenoid turn or anything else.?

@vzn beyond utilities I don't think DeepMind really makes any of their code public, though I have a feeling they'll start releasing some of their older (2016?) stuff soon. I wonder how DeepMind gets funding to stay afloat

@NiharKarve I assume their money comes from Google.

Well, from Alphabet, as the Google holding company is now called.

Apparently DeepMind registered over $600 million losses in 2018 and 2019

Google can afford it :-)

Indeed, they've "waived a $1.5 billion loan to DeepMind"

I wonder if Google would give me a $1.5 billion load.

For my DeepLunch project.

Morning

I finally got the PDG booklet of 2020

They finally made it into an actual booklet

Instead of that cheap spiral spine

It's not exactly new as I have read that paper already

but, it's interesting how quick experimental quantum is advancing now which really settles a lot of questions in the philosophy of quantum

@Secret What philosophical question do you think is being settled there?

observing a quantum transition in detail is an amazing experimental feat but it doesn't settle anything about the measurement problem

the video's idea that interpretations disagree over whether a "quantum jump" is random and discrete or continuous and deterministic is a caricature of what the disagreements really are

is love even real

@Slereah did you still not sleep? :P

I have slept now

but philosophy remains to be solved

Is there anything special about Lie algebras that don't have nicely definable "structure constants", for instance I could say that the structure constants of su(2) and so(3) are $\epsilon_{ijk}$. But what would I say about the Lorentz algebra, it has no structure constants?

@Charlie every algebra has structure constants - they are the coefficients $f_{abc}$ in $[L_a,L_b] = f_{abc} L_c$ for generators $L_i$. Since the $L_i$ form a basis and $[L_a,L_b]$ is an element of the Lie algebra, this definition works for every Lie algebra

But the Lorentz algebra isn't in that form, it has 4 terms

this thingy

you realize that $f_{abc}L_c$ has summation convention, right? :P

OH whoops, yeah

ty :p

people even often write that ${f_{ab}}^c L_c$, I was just too lazy

Hi @JohnRennie Sir

@ACuriousMind

@123 hi :-)

Did you see my morning question? If you have time pls answer it

Question is few comments above

You can calculate the torque in various ways. My preferred way to think about it is that because a current is flowing we have electrons moving in a magnetic field, so there is a Lorentz force from the field $\mathbf F = e\mathbf v \times \mathbf B$.

It's that Lorentz force on the electrons in the wire that causes the torque on the coil.

Hmm.. Good way for me to think.

How can we think this torque by interaction between magnetic fields

Because Lorentz force is due to magnetic field.

And Magnetic field only interact with magnetic field which is not mention in rectangular coil phenomenon

Well the current in the coil creates a dipole field, and that dipole field interacts with the external field. But calculating this interaction can get a bit complicated. It's simpler to use my approach.

Oookay... Means it is also possible to define torque using dipole of coil and external field.

What is mean about number of turns in rectangular coil?

Why collisions with molecules not taken account here

@123 if you have n turns then each turn gets the same Lorentz force, so the total Lorentz force is n times the force for a single wire. That's why the torque is proportional to n.

Because there is no external force on it. Then moment. Before and after collision are equal. Or sum of all external and internal forces zero.

Am I correct in @PrateekMourya question @JohnRennie pls confirm

@JohnRennie thanks a lot. This turn is not solonoid coil? Just more rectangular coil

@123 yes

Circular loop magnetic field act as tangent force?

@123 that still not the point remember in fluid mechanics we say pressure is an internal property of the fluid so why not here

Pressure is also due to internal forces/area overall net Resultant of all internal forces is zero.

Forces/Area means if you measure the force in one area force is not zero. But overall sum of internal forces are zero.

@Secret subquantum! :)

@vzn I prefer SuperQuantum™