Divergence and rotational equal to zero - solutions?

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Discussion Overview

The discussion centers around the equations involving divergence and curl being equal to zero, specifically exploring the implications of these conditions on the vector field F(x,y,z). Participants are interested in deriving solutions and understanding the relationship to the Laplace equation, with a focus on the analytical approach to partial differential equations.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant inquires about deriving the general form of F(x,y,z) given the conditions div F = 0 and curl F = 0, expressing uncertainty due to their current study of linear differential equations.
  • Another participant suggests that the conditions lead to the Laplace equation.
  • A subsequent reply confirms that the conditions indeed lead to the vectorial Laplace equation, stating that each component's Laplacian is zero.
  • A different participant challenges the characterization of the equation as vectorial, asserting that it is scalar due to the condition curl F = 0, which implies F can be expressed as the gradient of a scalar function phi.
  • This participant emphasizes that phi, being a scalar, will be involved in a scalar equation.

Areas of Agreement / Disagreement

Participants express differing views on whether the implications of the equations lead to a vectorial or scalar interpretation, indicating a lack of consensus on this aspect of the discussion.

Contextual Notes

There are unresolved assumptions regarding the definitions of vector and scalar fields in the context of the equations discussed, as well as the implications of the conditions on the nature of solutions.

Tosh5457
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Hi, I'd like to know the solutions for these equations, and how to arrive at them. Is it possible to derive the general form of F(x,y,z) analytically? I'm still studying linear differential equations so I have no clue on what to do with partial differential equations...

div F = 0
curl F = 0

Thanks :)
 
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Doesn't this lead to Laplace equation ?
 
dextercioby said:
Doesn't this lead to Laplace equation ?

Yes, it leads to the vectorial Laplace equation (each component's laplacian is 0).
 
Vectorial ? No, scalar, take curl F=0. Then F = grad phi. Phi is a scalar. Phi will be involved in a scalar equation.
 

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