What is Math and physics: Definition and 184 Discussions

The Journal of Physics A: Mathematical and Theoretical is a peer-reviewed scientific journal published by IOP Publishing. It is part of the Journal of Physics series and covers theoretical physics focusing on sophisticated mathematical and computational techniques. It was established in 1968 from the division of the earlier title, Proceedings of the Physical Society.
The journal is divided into six sections covering: statistical physics; chaotic and complex systems; mathematical physics; quantum mechanics and quantum information theory; classical and quantum field theory; fluid and plasma theory.
The editor in chief is Martin R Evans (University of Edinburgh).

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  1. MantisShrimp

    Car chair impact absorption

    I do not know much about this, please help. My truck seat back cushion is 2" thick. Truck A is ~5,700 lbs from google. 2011 f-150 super cab 6.5ft bed. Truck B is ~5775. 2015 GMC Yukon xl slt. If truck A is stopped and braked and truck B hits truck A going 45-55mph creating a force of...
  2. J

    Calculating the Average speed given two speeds

    $$ v_1= 115km/h $$ $$ v_2= 60km/h $$ solution: $$ \frac {v_1 + v_2}{2} $$
  3. Emi_Garrido

    Recommended books for a physics undergrad

    Hello! I'm new here. I'm on my first year of physics at the UNAM, in Mexico, and I want to now which books and resources would you recommend me to 'survive' in the career, not just in physics, but also in the mathematical formalism for subjects such as geometry, abstract algebra, calculus...
  4. Rhdjfgjgj

    To find work done by a variable force

    Guys, please look at the following question I am aware of how to take a dot product of 2 vectors whose i,j,k components are given. My issue is with both integrals. I feel it should be '-dx ' rather than dx because x is decreasing , same as in '-dy'.and I'm taught that if x is decreasing then...
  5. billard

    I Deriving formula for kinetic energy

    Hello! I am new to the differential version of classical physics, and I am trying to work how to derive kinetic energy from some pre-assumed equations: Assume that we know: ##\ddot{z} = 0## and ##m\ddot{\textbf{r}} \cdot \dot{\textbf{r}} = 0## This results in $$\frac{1}{2}m\dot{r}^2 = W =...
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    • Classic physics Dot product Kinetic energy Math and physics Vectors
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  6. A

    Other Math Help for Physics Undergrad: Advice Needed

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  7. hdsfhsdf

    A "The Operation Combination Problem"

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  8. themethetion

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  9. NeedFreedom

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  10. V9999

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  11. M

    How do I incorporate electric fields into capacitors?

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  12. S

    Understanding how time derivative = acceleration

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  13. deme76

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    help me in my problem set qs
  14. P

    Education articles about Astronomy helping learning Math and Physics

    Is there any specialize articles that talk about how Astronomy can help learning Math and Physics? In particular, how observational astronomy can help in the learning process of Math and Physics.
  15. TGV320

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  16. N

    Fourier transform of rectangular pulse

    Here is the question: Here is my answer
  17. B

    I How do I compute the second derivative of a one-dimensional array?

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  18. T

    I Need Calculus Book Recommendations please

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  19. gutelily

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  20. W

    Studying Physics intrigues me but Math makes more sense. What to study?

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  21. F

    Mainstream math and physics teaching/education journals

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  22. L

    Studying Self-study for math and physics or sticking with school material?

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  23. D

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  24. A

    Programs Should I become a physicist or a mathematician?

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  25. heslaheim

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  26. E

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  27. D

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  28. T

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  29. J

    Help with Mathematical Solution to a Single Leg Hanging Basket

  30. A

    Who invented electric potential and why?

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  31. T

    Studying Wrong views on math and physics

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  32. M

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  33. The applications of eigenvectors and eigenvalues | That thing you heard in Endgame has other uses

    The applications of eigenvectors and eigenvalues | That thing you heard in Endgame has other uses

    Zach Star gives an explanation of Eigenvalues and Eigenvectors, with some applications
    • scottdave
    • Media item
    • applied mathematics eigenvalues eigenvectors math and physics
    • Comments: 0
    • Category: Linear Algebra
  34. E

    Other Math Textbooks for Physics Students

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  35. B

    Math Switching from science PhD to math BS?

    Hello, TL;DR: Could it be practical to leave a PhD in Earth science in order to earn a BS in math (starting at the upper division level) if I'm tired of having a spotty math foundation and want to be able to learn anything? I've been on a slow, wandering path towards a vaguely defined "career...
  36. entropy2008

    Cauchy-Riemann Theorem Example in Physics

    I was thinking of the wavefunction in QM but I'm not sure how it's used and when.
  37. Z

    Physics Security Clearance required when applying for jobs related to math and physics?

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  38. mahonskey

    I Hypothetical Eclipse Calculation

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  39. mahonskey

    B Quantum total eclipse of the sun?

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  40. X

    Studying Need some advice: dive straight into physics, or do math first?

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  41. Captain Kneecaps

    Programs Pure maths or applied maths as a second major to physics

    I am currently in my second year of studying a bachelor in physics and applied maths. My aim is to one day do research in physics. I am particularly interested in subjects such as gauge theories, AdS/CFT and gravity. My question is whether it would be more beneficial to switch from studying...
  42. O

    What's the use of unit vectors?

    Homework Statement: Hallo. Can somebody explain to me what's the importance-use of unit vector in the below (second) equation? Why isn't the first equation just enough to describe r? What's the reason for unit vector to even exist? Homework Equations: in the photos
  43. Lucas Olivio

    Math behind the Fresnel lens

    Homework Statement: what is the mathematical explanation for fresnel lenses Homework Equations: No equations were provided I'm going to post a link to one article I found that I think has the answer, but I couldn't understand because of my lack of knowledge in physics and math...
    • Lucas Olivio
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    • Fresnel Lens Math and physics Math equation
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  44. S

    A Is there any theory that can be modeled in any type of space?

    Is there any theory in physics that can be modeled in any type of space (Hilbert space, Euclidean, Non-Euclidean...etc)? And if yes, could that theory also contain/be compatible with all types of (physical) symmetries?
    • Suekdccia
    • Thread
    • Euclidean geometry Hilbert space Math and physics Space Space and time Theory Type
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  45. pairofstrings

    B What is in a Jumping Ball?

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  46. cordless03

    What math and physics is needed for biophysics research?

    What math and physics is needed for biophysics research? Specifically having to do with medical applications. I am undergrad student interested in physics and medicine.
  47. Zack K

    Programs What math subjects should a physics major master?

    Throughout a degree as a physics major, you take a bunch of math courses, and it's safe to say that you should have a good understanding of all the calculus and algebra courses. But what math subject/specific course should I master at a spiritual level? Especially ones that are needed for...
  48. Adesh

    What is my problem? (Difficulty solving math and physics questions)

    Hello everyone, Physicsforum has always helped me whenever I get into predicament. So this time again I want the help of experienced people. I did a great deal of hard work for understanding the true nature of calculus. I read Newton's original works and I found that his sole purpose of...
  49. danielri1011101

    Admissions Maximizing the "goodness" of a recommendation letter

    Hello everyone, since recommendation letters are usually important when applying for graduate studies, I'd like to ask the following: What do you guys think of the statement 'The best way to maximize the "goodnes" of your recommendation letter is by not caring about it' ? I guess it's...
  50. Loubrainz

    How do I find the intersection of three cones?

    Homework Statement tl;dr: looking for a way to find the intersection of three cones. I'm currently working with a team to build a Compton camera and I've taken up the deadly task of image reconstruction. Background Theory: https://en.wikipedia.org/wiki/Compton_scattering For a single Compton...
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