A Question about Non Linear Differential Equation

Click For Summary

Discussion Overview

The discussion revolves around methods for solving non-linear differential equations, particularly focusing on the role of symmetries in finding exact solutions. Participants explore various approaches and references related to this topic.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant inquires about methods or references for obtaining exact solutions of non-linear differential equations given their symmetries.
  • Another participant notes that the ability to solve a non-linear differential equation is highly dependent on its specific form, stating that "almost all" non-linear equations cannot be solved using elementary functions.
  • A different participant suggests that the theory of Lie groups can be utilized to solve equations by leveraging their symmetries.
  • Another approach mentioned involves sketching or plotting the direction fields of the equation as a potential method for analysis.

Areas of Agreement / Disagreement

Participants express varying viewpoints on the solvability of non-linear differential equations, indicating that multiple competing views remain regarding the methods and feasibility of finding exact solutions.

Contextual Notes

The discussion does not resolve the limitations associated with specific forms of non-linear differential equations or the applicability of proposed methods.

yicong2011
Messages
75
Reaction score
0
Given a non linear differential equation, we have know the symmetry of its solution. How can we finally get the exact solution? Any methods or reference?

(I am a physics students; recently I met with something relevant to non linear differential equation.)
 
Physics news on Phys.org
How, or if, one can solve a non-linear differential equation strongly depends upon the exact form of the equation. "Almost all" non-linear equations cannot be solved in terms of elementary functions.
 
yicong2011 said:
Given a non linear differential equation, we have know the symmetry of its solution. How can we finally get the exact solution? Any methods or reference?QUOTE]
The theory of Lie groups can be employed to solve an equation using the symmetry.
 
You might sketch/plot the direction fields of the equation.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 12 ·
Replies
12
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 52 ·
2
Replies
52
Views
9K
  • · Replies 5 ·
Replies
5
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K