# Search results

1. ### A Is this system of equations (numerically) solvable?

Thanks for your response. I'll think about the points you mentioned! About pre existing algorithms/ tools: I assumed that they would be incompatible with my problem since I do not have an explicit function that I want to minimize, but that the function that I want to minimize involves some...
2. ### A Is this system of equations (numerically) solvable?

I have tried to implement my own algorithm, but it does not seem to work and maybe you have some suggestions on why it doesn't work or can suggest alternativies? :-) First of all, I forgot to mention that the value of ##g_{ij}^\alpha## is either 0 or 1. First I make the following...
3. ### A Is this system of equations (numerically) solvable?

Could you recommend me some tools for this automatic optimization? :)
4. ### A Is this system of equations (numerically) solvable?

Ah, so like minimizing some error function? Thanks I'll think about it and try to implement it :)
5. ### A Is this system of equations (numerically) solvable?

But how exactly do I solve here for ##\theta_i, J##? To use the equation in the quote, I would need to know the value of ##u_{ij}##, but from the equations, i can only obtain the values of the sum ##\sum_{i=1}^N u_{ij}##, no? Maybe I misunderstood what you're saying
6. ### A Is this system of equations (numerically) solvable?

I'm sorry, I should've posted this in a different section of the forum since this is a project of mine

12. ### Other Books on history of physics?

I realized that I know nothing about the history of physics! Does anyone have any good recommendations on this topic? For example I'd like to have a clear timetable in my head about what was discovered at what time? by who? what were the methods/thoughts that went into it and what did the rest...

No one? :-(
14. ### Math Job in Artificial Intelligence with a Math Degree

Sorry for asking this here, and I know there's a lot of posts on the internet answering exactly this question but I'm curious about the opinion of you smart eople! Does anyone have a preference for any sources to get into AI as a theoretical physics student? such as books, online courses, etc...
15. ### Evaluating partition function (stuck for weeks)

I'm sorry. How do I put math symbols within a sentence? I think it used to be within single dollar signs.
16. ### Evaluating partition function (stuck for weeks)

Hi, I'm trying to calculate the partition function for a certain system and I arrived at an expression for the partition function $Z$, and have been stuck here for two weeks at the least. This is not a homework problem. If this is the wrong place to post a question like this, could you please...
17. ### Quantum Computing presentation ideas

thanks for the suggestion. Do you mean that it's not a good book for quantum computing or do you actually mean quantum mechanics ? I liked the book so far
18. ### Quantum Computing presentation ideas

Hey everyone, I'm sorry if this is not the right place to ask this, but here it goes: I have to do a presentation on a topic on quantum computing. Does anyone know any cool doable topics? We have been working through Ballentine's quantum mechanics book, to give you an idea of the level. Thanks!
19. ### Switching from physics to finance

Thanks for the suggestions everyone. I'll check them out.
20. ### Switching from physics to finance

Hey everyone. I'm currently doing my Master in Theoretical Physics, because I like to study physics, but I don't want to have a career in physics. Right now I'm looking at a career in (quantitative) finance. I don't have any knowledge of it yet. Does anyone have any tips on making this switch...

25. ### I want to learn general relativity

I want to learn it as a (mathematical) physicist would learn it. I know all the math you mentioned except differential geometry and topology
26. ### I want to learn general relativity

hello, I would like to learn general relativity. To understand general relativity, do I need to understand the math on a rigorous level? (the way mathematicians understand the math) . What math do I need? Can you suggest me some math/general relativity books? Thanks and sorry if my english...
27. ### Feeling like I forget everything I learn

hey, I'm a 3rd(last) year physics student. I have the feeling that I am forgetting everything that I learn very rapidly. For example, in my 1st year I had things like classical mechanics, optics and classical electrodynamics. At the time I understood these subjects pretty well, and aced them(I...
28. ### 2D fermi gas

Homework Statement Show that PV = E Homework Equations E= \int^\infty_0 D(\epsilon)n_{FD}(\epsilon) \epsilon \cdot d\epsilon n_{FD}=\frac{1}{(1+ e^{-(\alpha +\beta \epsilon_k)})} \psi(\alpha ,\beta, V) =\beta PV =\sum_\vec{k} \ln{(1+e^{-(\alpha +\beta \epsilon_k)}) } and in an...
29. ### Really hard integrals?

Ah cool, thanks!
30. ### Really hard integrals?

Are you sure about the tan substitution? I couldn't solve it that way, but I'm not very good