Is Calculus of Variations a Daunting Topic for a Final Year Math Project?

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Discussion Overview

The discussion centers around the topic of "Calculus of Variations" as a potential subject for a final year mathematics project. Participants explore resources for learning the topic, the relevance of prior calculus knowledge, and suggest specific books and classic problems related to the subject.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant expresses concern about the daunting nature of the topic and seeks recommendations for books that explain it well.
  • Another participant suggests that any good mechanics book could serve as a starting point for understanding the topic.
  • A different viewpoint argues that mechanics books often approach the subject from a physical perspective and may not adequately explain the mathematical foundations, such as variations and theorems.
  • Specific book recommendations include "The Calculus of Variation" by van Brunt for elementary level, "Calculus of Variation I and II" by Giaquinta for intermediate level, and "The Calculus of Variations in the Large" by Morse as a more advanced text.
  • One participant proposes focusing on classic problems like the brachistochrone for the presentation, noting that this problem is commonly addressed in calculus of variations literature and could include historical context about the Bernoulli brothers.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the best approach to learning the topic, with differing opinions on the utility of mechanics books versus mathematical texts. The discussion remains unresolved regarding the most effective resources and methods for studying calculus of variations.

Contextual Notes

Some participants highlight the importance of understanding sufficient conditions for maxima and minima, which may not be thoroughly covered in mechanics texts. There is also an implied need for a solid foundation in calculus before tackling the topic.

ElDavidas
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I'm doing my final year in maths and am just away to start my 4th year project. It involves learning a subject on my own then submitting a report and doing a presentation. The topic I have to do is "Calculus of variations".

I've been reading about the topic briefly on a few webpages and it does seem a bit daunting!

Does anybody know any decent books worth reading that provide a good explanation of the subject? Also, would it be helpful if I revised certain areas of calculus before trying to learn the topic?

Thanks
 
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Any good mechanics book would be an excellent place to start.
 
Actually, mechanics book most often treat the point from a physicla point of view. Not explaining what a variation is, using \delta and using all kinds of theorems and properties of functions without much scrutiny.

My advice is to go to your library and get a mathematical book which introduces the subject. Then take it with you and study it.
 
Elementry level book: The Calculus of Variation by van Brunt (Mainly 1D 2D problems), Introduction to the calculus of Variations and its applications by Wan.
Intermediate level: Calculus of Variation I and II by Giaquinta, and some sections of Tensors, Differential Forms, and Variational Principles.
Masterpiece: Morse, The Calculus of Variations in the Large, and work by C. Caratheodory.

Mechanic books often omit the discussion of sufficient condition of being max/min.
 
Last edited:
I would suggest doing a presentation on some of the classic problems like the brachistochrone. Any book on the calculus of variations will tackle that one early on. You could throw in some historical intrigue here about the Bernoulli brothers.
 

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