Functions with curvature as parameter

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Discussion Overview

The discussion revolves around the concept of parameterizing functions in two or three dimensions using curvature as a parameter. Participants explore the relationship between curvature and function representation, particularly in the context of multi-variable calculus and manifolds.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant expresses curiosity about parameterizing functions with curvature, noting confusion stemming from a conversation about curvature being likened to the second derivative.
  • Another participant suggests that the idea of parameterizing with curvature makes more sense in the context of single-variable functions, questioning the feasibility of such parameterization in multivariable contexts.
  • A participant proposes that the concept could be generalized to any manifold, specifically mentioning the case of a line in 2D and providing an example of curvature as a function, K(t)=1/t, while seeking a method to derive corresponding x(t) and y(t) functions.
  • Another participant introduces the "Prescribed scalar curvature problem" as a related topic and references a book by J. Kazdan on the subject.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the feasibility of parameterizing functions with curvature, and multiple perspectives on the topic remain, particularly regarding the applicability to different dimensions and types of functions.

Contextual Notes

The discussion highlights the complexity of relating curvature to parameterization, with assumptions about the dimensionality of functions and the nature of curvature remaining unresolved.

MrMormon
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A year ago I learned in multi-var calc about curvature, and since then I've wondered something. It came up again today when my dad tried to talk to me about curvature like it was the second derivative. :P

Is there a way, or at least any attempt or resource at all, about parameterizing a function (2d or 3d) with curvature as the parameter? I've tried but can't derive anything...
 
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MrMormon said:
A year ago I learned in multi-var calc about curvature, and since then I've wondered something. It came up again today when my dad tried to talk to me about curvature like it was the second derivative. :P

Is there a way, or at least any attempt or resource at all, about parameterizing a function (2d or 3d) with curvature as the parameter? I've tried but can't derive anything...


What you are asking for only kinda makes sense if your function isn't multivariable. Think about it... Curvature is a function of the variables, as much as the function value is a "function" of the variables; I suppose it might help if you first elaborated what you meant by "parameterizing".
 
Good point. This should be generalizable to any manifold in any number of dimensions, but I'm most specifically thinking about a line in 2D. For example, K(t)=1/t would be a spiral, but is there a way to derive x(t) and y(t) using K(t), because I've never seen this anywhere.
 
You might be interested in a related topic called "Prescribed scalar curvature problem." There is a book written on it by J. Kazdan.
 

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