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| bio | website | physics.uwa.edu.au/~styler |
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| location | Melbourne, Australia | |
| age | 32 | |
| visits | member for | 2 years, 9 months |
| seen | May 14 at 12:39 | |
| stats | profile views | 96 |
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Mar 7 |
comment |
How does the method of Lagrange multipliers fail (in classical field theories with local constraints)? I was actually looking at a pointwise constraint $g(\phi(x))=0$ - so it's codimension is infinite (I guess). Why is the variational/functional derivative is not a good analog of the partial derivative in the finite dimensional case? |
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Mar 6 |
awarded | Organizer |
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Mar 6 |
revised |
Derivative of $(a\,x)^{b\,x}$ Added brackets... |
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Mar 6 |
comment |
Derivative of $(a\,x)^{b\,x}$ The link for the first example is wolframalpha.com/input/?i=D[(a*x)^(b*x),x]. Does anyone know how to get Wolfram|Alpha links working properly in the markup? |
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Mar 6 |
revised |
Derivative of $(a\,x)^{b\,x}$ fixed image |
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Mar 6 |
suggested | suggested edit on Derivative of $(a\,x)^{b\,x}$ |
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Mar 6 |
answered | Derivative of $(a\,x)^{b\,x}$ |
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Feb 28 |
comment |
Div, curl and linear algebra There's something not quite right about this.... |
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Feb 28 |
revised |
Div, curl and linear algebra added 18 characters in body |
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Feb 28 |
revised |
Div, curl and linear algebra added 30 characters in body; added 12 characters in body |
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Feb 28 |
answered | Div, curl and linear algebra |
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Feb 27 |
awarded | Commentator |
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Feb 27 |
awarded | Autobiographer |
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Feb 27 |
comment |
How does the method of Lagrange multipliers fail (in classical field theories with local constraints)? Thanks Christian. I never found this explanation completely satisfying - but I think that I'm coming around to liking it now. How does this understanding generalize to functionals - eg optimizing $\int f(x,\phi(x),\phi'(x)) dx$ wrt some constraint $g(\phi(x))=0$? |
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Feb 27 |
comment |
Integration by parts @SMH: I don't know why, it works fine for me. This is the imgur link: i.imgur.com/2IrTU.gif |
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Feb 27 |
awarded | Student |
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Feb 27 |
answered | Integration by parts |
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Feb 27 |
asked | How does the method of Lagrange multipliers fail (in classical field theories with local constraints)? |
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Feb 11 |
awarded | Citizen Patrol |
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Jan 17 |
comment |
Is everything an expression? Everything in Mathematica is an expression... |
