Question on Landau and Lifshitz volumes

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Discussion Overview

The discussion centers on the mathematical prerequisites for studying the first volume of Landau and Lifshitz's series, particularly focusing on the necessary mathematical background and physics knowledge required for effective comprehension of the material.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants suggest that familiarity with multivariable calculus, differential equations, and basic linear algebra is sufficient for volume I.
  • Others emphasize the importance of having a solid understanding of physics concepts, arguing that an undergraduate physics degree is essential.
  • One participant mentions that calculus of variations is helpful but not well explained in the text, which may pose challenges for some readers.
  • Another participant notes that while the mathematical requirements are not high, prior exposure to concepts like Lagrangian and Hamiltonian dynamics is beneficial.
  • Some participants express differing views on whether volume I is suitable as a first exposure to the material, with one stating they found it enjoyable and comprehensible as a beginner.
  • It is mentioned that later volumes require knowledge of partial differential equations, Fourier analysis, and tensor analysis.

Areas of Agreement / Disagreement

Participants generally agree that the mathematical prerequisites are not overly demanding, but there is disagreement regarding the necessity of prior exposure to certain physics concepts and whether volume I is appropriate for beginners.

Contextual Notes

Some participants highlight that the physics background may be more critical than the mathematical skills, suggesting that much of the required math can be learned through undergraduate physics courses.

Hunus
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What are the mathematical prerequisites of these books? In particular, what are the mathematical prerequisites of volume I?
 
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For volume 1, you should be ok with multivariable calc and differential equations, plus a bit of linear algebra (eigenvalues and stuff). They have pretty high expectations as far as computational calculus skills go, especially to solve the problems. It probably helps to be familiar with the calculus of variations too, as it's not explained very well as far as I remember.
 
Daverz said:
The mathematical requirements aren't that high: comfort with partial differentiation, vector calculus, ODEs, and matrices. But this shouldn't be your first exposure to most of the concepts, e.g. Lagrangian and Hamiltonian dynamics. Try Fowles or Symon.

I was thinking only of the first volume, Mechanics. For the other volumes you will need some knowledge of PDEs (e.g. wave equation), Fourier analysis, contour integration, and some exposure to tensor analysis.

And really, the Physics background needed to study these texts is more important, as you'd pick up most of the needed math in undergrad Physics courses.
 
I agree with all the above opinions. The math prerequisite is not very high, but the physics prereq is pretty much an undergraduate physics degree, in my opinion.
 
The first volume?
Mathematical Methods in the physical sciences by M Boas level
The other books require a little more though
 
For volume 1, you should be ok with multivariable calc and differential equations, plus a bit of linear algebra (eigenvalues and stuff). They have pretty high expectations as far as computational calculus skills go, especially to solve the problems. It probably helps to be familiar with the calculus of variations too, as it's not explained very well as far as I remember.

I agree with this completely. Just wanted to add something: I hadn't seen calculus of variations before, and struggled quite a bit with the first chapter at first. But then I watched this MIT lecture by Strang, and it made a lot of sense after that. I would recommend watching it first. After the first chapter, if I recall correctly, you don't see calculus of variations for the majority of the book (although you use the results you obtained in the first chapter).

The mathematical requirements aren't that high: comfort with partial differentiation, vector calculus, ODEs, and matrices. But this shouldn't be your first exposure to most of the concepts, e.g. Lagrangian and Hamiltonian dynamics. Try Fowles or Symon.

I disagree with the last point. L&L v1 was my first exposure to the material and I really enjoyed it, and believe I understood it well - the style works well for me. It imagine it depends on how each individual learns best. There isn't nearly as many problems as in other texts, but you can augment it by expanding on the problems they assign and just creating your own problems.

Also, a lot of the other books use tensor analysis and assume you know a bit about PDE's.
 

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