Ode and pde-the major difference

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Discussion Overview

The discussion centers around the differences between ordinary differential equations (ODEs) and partial differential equations (PDEs), exploring the nature of these equations, their solutions, and the numerical methods used to solve them. Participants seek clarification on the definition and implications of partial derivatives and the complexities that differentiate ODEs from PDEs.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses a function as an ordinary derivative and seeks a similar explanation for partial derivatives.
  • Another participant questions the abbreviations used for numerical methods, prompting clarification.
  • A participant proposes that the abbreviations refer to numerical methods: Finite Element Method, Finite Differences Method, and Finite Volume Method, noting that these methods are not strictly required but useful for solving differential equations.
  • Participants differentiate ODEs as involving functions of single variables and PDEs as involving functions of multiple variables.
  • A humorous suggestion is made regarding the meaning of "bem," implying a fictional solution approach involving an alien race.
  • A participant identifies "bem" as the Boundary Element Method and provides a link for further information.
  • There is a question raised about the relationship between the Boundary Element Method and the Boundary Value Problem, which is later clarified as not being the same.

Areas of Agreement / Disagreement

Participants express differing views on the definitions and implications of ODEs and PDEs, as well as the relevance and necessity of various numerical methods. The discussion remains unresolved regarding the complexities that differentiate ODEs from PDEs.

Contextual Notes

Some assumptions about the definitions of terms and methods are not fully explored, and there is a lack of consensus on the relationship between different numerical methods and their application to differential equations.

chandran
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i will express some function y as follows as its ordinary derivative

dy/dt=y

(can i say like this-the change in y value with respect to change in t value at the point t will be equal to the y value at t)

Can somebody explain a partial derivative like the above statement

What is so special in a partial differential equation that it requires so many methods as follows. What is the difficulty that makes the ode and pde different in their solution

1)fem
2)bem
3)fdm
4)fvm
 
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don't mind but what do u'r short forms , viz
1)fem
2)bem
3)fdm
4)fvm
mean?
 
I would hazard:
1) Finite element method
2) ?
3) Finite differences method
4) Finite volume method

These are all NUMERICAL methods, none of them are "required", but options that have shown themselves handy in solving diff.eqs.
 
Ordinary Differential Equations are equations that involve solutions of functions of single variables.

Therefore, f(x) etc...

Partial Differential Equations are equations that involve solutions of functions of multiple variables.

So for instance f(x,y)
 
bem: bug eyed monster? I.e. appealing to an alien race to solve your equations for you!
 
Is that the same as the common Boundary Value Problem...

<should've looked at link first...>

<looks>

no! :)
 

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