Recent content by implicitnone

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    LaTeX Finding a Good Free LaTeX Editor

    Lyx + TeXniccenter would be a nice couple as free programs. If you want to pay Scientific Workplace + Win EDT are the best solutions (imho).
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    Maple When Will I Need Math Software in My Studies?

    Hi, It would be nice to start right now, just like you're doing with Wolfram Alpha. Maple (or a second choice of mine would be Mathematica) for a mathematician. You can do both symbolic (where x or y or "the parameters" live as they are) or numerical (where all parameters have numerical...
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    Mathematica Mathematical Methods in the Physical Sciences, 2nd Edition

    Boas is a great book. It had I think the clearest explanations that I've ever seen when I was taking a Math. Phys. course a long time ago. Of course, there are many new, modern books on the subject but Boas will never get old :) Try learning from the ground up, using right elements on the...
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    Mathematica How do mathematica and maple solve cubics?

    I once tried to learn the basic of symbolic computation but it's not easy, I quitted :) They use very advanced algebra theorems for convergences and so on. The numeric codes should be as complicated as the symbolic ones as well. They're all highly optimized.
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    Graduate Two dimensional anti de Sitter space without cosmological constant?

    It really is! Knowing that I can still count on GRTensorII feels good :)
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    Graduate Two dimensional anti de Sitter space without cosmological constant?

    Thank you very much bcrowell! Learning never ends :) It was my first deal with 1+1 gravity and now I checked with some books and saw that the Einstein tensor identically vanishes in 2D gravity because of the definition. (See for example: "Lower dimensional gravity" by John David Brown or...
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    Graduate Two dimensional anti de Sitter space without cosmological constant?

    Very weird but I also tried with two other ways with computer. The internal packages of Maple and EinsteinTensor package of Mathematica library. They both gave zero Enstein tensor again!
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    Graduate Two dimensional anti de Sitter space without cosmological constant?

    GRTensorII is a Maple package for tensor and GR calculations: http://grtensor.org/
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    Graduate Two dimensional anti de Sitter space without cosmological constant?

    Thank you for your efforts. I will do so. It will be the first time that grtensor confused me.
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    Maple Troubleshooting Grtensor and Maple 11 Installation

    @smirshekari: Is your GrTensorII installed correctly? If so, it should see the metric directory by itself. And of course, before qload(mink) do you call grtensorii by grtw() and while installing grtensorii, have you copied maple.ini to the maple directory?
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    Graduate Two dimensional anti de Sitter space without cosmological constant?

    I have a spacetime which is (I think) AdS_2. The metric is, I'm trying to find the Einstein tensor, defined as, and the result is zero! I thought that, for the AdS spacetimes I needed to have a nonzero Einstein tensor which is caused by the cosmological constant. What is wrong...
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    Laptop for students recommendations

    These are the top brands (imho): 1. Sony VAIO 2. DELL 3. HP I use DELL and they have a great technical assistance team. But Lenovo is not a bad laptop.
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    To learn Vim or not to learn Vim

    A coder should know basic vim but one should be open to other choices, as well. Use it and if you don't like try something else. I personally use notepad++ which is great for me!
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    Python Learning Python and Sage - Advice Appreciated

    Learning Python and SAGE is a very good way of "STARTING". For more complicated business you will need more but Python and SAGE are pretty cool stuff to start with.
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    Mathematica Mathematica taking a long time to solve

    Try to solve xm in terms of xr from xm - a xr == b then place it in the other equation, then solve just for xm. It may do the job.