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Background: I am a 3rd-year undergraduate student interested in mathematics and theoretical physics. I have been reading some classical differential geometry books and I want to pursue this subject further.

Questions: I have three questions:

  1. What are the current research topics in differential geometry? What is the scope of those areas?

  2. How should I go about pursuing research in this area? I mean to say what background should I have if I want to start research in this area? How should I go about it (i.e. what books should I read and what are some important concepts?)?

  3. Given that I am reading classical differential geometry (Do' Carmo's book), how much time will it take me to start my research?

Thank you in advance.

FD_bfa
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Andrew Miller
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  • Which do Carmo book are you reading? – Moishe Kohan Oct 19 '13 at 11:31
  • Differential geometry of curves and surfaces(currently on 4th chapter) – Andrew Miller Oct 19 '13 at 13:07
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    Then partial answer to (2) is to read the other do Carmo's book: "Riemannian Geometry". I do not know though if you have enough background to handle it. If you can handle it, you may want to revisit your questions here. One more thing: The book you are reading is basically about mathematics of 18th and 19th century. The "R.G." is about math of 20th century, until mid 1960s. Without knowing it (at least the first 4 chapters), you will be facing simple linguistical problem understanding what modern Differential Geometry is about. – Moishe Kohan Oct 19 '13 at 13:28
  • @studiosus That makes sense. – Andrew Miller Oct 19 '13 at 19:20
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    Look at Marcel Berger's book A Panoramic View of Riemannian Geometry. – Dan Fox Dec 21 '14 at 22:24
  • I would recommend taking a look at the following books by V. Arnol'd:
    1. "Ordinary differential equations" (you'll get your first inkling of differential geometry there, at least an introduction to manifolds and tangent spaces)
    2. "Mathematical methods of classical mechanics", which has pretty good modern differential geometry content.
    3. "Lectures on partial differential equations".

    Also, V. Zorich's "Mathematical analysis" will give you a pretty good background on manifolds, tangent spaces, and differential forms. It overlaps some with Arnol'd's "Mechanics".

     – avs Aug 20 '20 at 01:50
  • ‘[H]ow much time will it take me to start my research?’ Reading books and papers, that’s one thing. Developing a fruitful research area is a matter of creativity, insight, perseverance, and a healthy dose of luck. – A rural reader May 20 '24 at 00:46

1 Answers1

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Here is a partial answer based on my comment:

At the very least, you should read the other do Carmo's book: "Riemannian Geometry". I do not know though if you have enough background to handle it. The book you are reading is basically about mathematics of 18th and 19th century. (It is good that you are reading it, keep doing so, but it prepares you for the current research about as much as reading about classical mechanics and electromagnetism prepares you for research in, say, string theory.) In contrast, the "R.G." is about math of 20th century, until mid 1960s. Without knowing at least the first 4 chapters of it, you will be facing basic linguistical problems understanding what the modern Differential Geometry is about. I can write about current research in geometric flows or in minimal surfaces, or in Kähler-Einstein metrics, but it would be mostly useless at this point.

To do serious research in modern differential geometry you also need strong background in:

  1. Algebraic topology (say, to the extent covered in Hatcher's "Algebraic Topology" book).

  2. Functional Analysis, Sobolev spaces, etc.

  3. Linear and Nonlinear PDEs (primarily elliptic and parabolic), at least if you will be doing geometric analysis. See for instance D. Gilbarg, N. Trudinger, "Elliptic Partial Differential Equations of Second Order".

  4. Possibly other fields, depending on the differential geometry subarea: Complex analysis, algebraic geometry, geometric topology, measure theory...

How long would it take you to get the right background (determined by your future PhD advisor) to start research, is impossible to tell, it depends on too many factors.

azimut
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Moishe Kohan
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