What Are the Practical Applications of Differential Geometry Beyond Mathematics?

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Discussion Overview

The discussion explores the practical applications of differential geometry (DG) beyond its traditional roles in mathematics and general relativity. Participants inquire about its relevance in various fields such as physics, engineering, computer programming, and other scientific domains.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants express curiosity about the practical uses of differential geometry in areas like aviation, heat transfer, and networks.
  • One participant suggests that familiarity with differential geometry implies comfort with tensors, which are noted to have applications in classical mechanics, electrodynamics, and optics.
  • Another participant lists various applications of DG, including architecture (geodesic domes), elasticity theory, fluid dynamics, navigation, computer graphics and animation, and medical imaging.
  • Additional references are provided for applications of DG in statistics, econometrics, and biological systems such as red blood cells and DNA.
  • Some participants mention their own experiences with tensors in solid state physics and stress modeling, indicating practical applications in those fields.
  • A participant shares an anecdote about a friend using DG concepts in automotive design for modeling shapes and testing wind resistance.

Areas of Agreement / Disagreement

Participants generally agree on the significance of differential geometry in various applied fields, but multiple competing views on specific applications and their relevance remain. The discussion does not reach a consensus on the extent or nature of these applications.

Contextual Notes

Some limitations include the potential for missing assumptions regarding the applicability of differential geometry in specific contexts and the varying interpretations of its relevance across different fields.

Gonzolo
Hi, I don't question the importance of DG in mathematics and General Relativity, but I am wondering where else it is used. Are there many other practical, applied uses for it in other areas of physics, science, computer programming, engineering or other that we should know about? Like aviation, or heat transfer or networks or something like that. Is it fair to say that whoever is comfortable with DG is comfortable with tensors and that knowing tensors is generally the most practical part?
 
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Gonzolo said:
Hi, I don't question the importance of DG in mathematics and General Relativity, but I am wondering where else it is used. Are there many other practical, applied uses for it in other areas of physics, science, computer programming, engineering or other that we should know about? Like aviation, or heat transfer or networks or something like that. Is it fair to say that whoever is comfortable with DG is comfortable with tensors and that knowing tensors is generally the most practical part?
Tensors are also used in classical mechanics, electrodynamics and optics.

For an example in classical mechanics please see - http://www.geocities.com/physics_world/mech/inertia_tensor.htm

Pete
 
Aside from the usual physics applications...

Architecture (Geodesic domes).
Elasticity Theory.
Fluid Dynamics.
Navigation.
Computer Graphics and Animation.
Medical Imaging (e.g. http://www-sop.inria.fr/epidaure/personnel/thirion/diff-geom.html and http://noodle.med.yale.edu/~hdtag/ee913a/lecture_1_small.pdf )

...indeed any system of differential equations.


Some others...

"Differential Geometry and Statistics"
http://www.ramex.com/title.asp?id=4065

"Applications of Differential Geometry to Econometrics"
http://titles.cambridge.org/catalogue.asp?ISBN=0521651166

"On the geometry of the red blood cell"
http://www.bio21.bas.bg/proceedings/Proceedings_files/vol1/PGEOM03.pdf

"Geometric Methods In The Elastic Theory Of Membranes In Liquid Crystalphases"
http://www.wspc.com.sg/books/physics/3579.html

"Differential Geometry Measures of Nonlinearity with
Applications to Ground Target Tracking"
http://www.fusion2004.foi.se/papers/IF04-1179.pdf

http://www.math.niu.edu/~rusin/known-math/index/53-XX.html
makes reference to applying DG to understanding DNA
 
Last edited by a moderator:
Thanks guys, exactly what I was curious about. I did cross tensors in solid state physics too (anisotropic crystals).
 
Gonzolo said:
Thanks guys, exactly what I was curious about. I did cross tensors in solid state physics too (anisotropic crystals).
Yea, that's what I do right now. Plasticity and Stress modelling, and now more boundary interface simulations (annealing twins). Fun stuff.
 
One of my friends who got a PhD in algebraic topology and studied bundles and tensors, works for a car company modeling shapes and testing for wind resistance apparently using some of these ideas.
 

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