network profile
| bio | website | |
|---|---|---|
| location | Italy | |
| age | ||
| visits | member for | 9 months |
| seen | Dec 4 '12 at 9:31 | |
| stats | profile views | 4 |
Currently I'm scientific software developer with proficiency in C/C++ with their related technologies Boost, STL, Qt, Python, computer graphics, OpenGL, Mathematica, MatLab, Bash scripting, NI Labview, LATEX, CMake, CUDA.
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Dec 4 |
awarded | Constituent |
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Dec 4 |
awarded | Caucus |
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Oct 12 |
comment |
Is spacetime discrete or continuous? What about the latest Nemiroff article on "Physical Review Letters"? Probably we should discard the concept of quantum foam, so it seems that spacetime still remains continuous under Planck lengths. |
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Oct 8 |
awarded | Commentator |
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Oct 5 |
asked | Metric tensor and its inverse |
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Sep 21 |
comment |
Are covariant vectors representable as row vectors and contravariant as column vectors Ok, so in general relativity with the index notation we can extend the usual matrices from linear algebra to (1,1) tensors, while for example (0,2) (completely covariant) tensors have no corresponding matrix in usual linear algebra right? I always have to use the metric tensor to raise/lower indices and get (1,1) tensors, is it right? |
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Sep 21 |
accepted | Are covariant vectors representable as row vectors and contravariant as column vectors |
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Sep 20 |
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Are covariant vectors representable as row vectors and contravariant as column vectors So you are suggesting that is always true to treat covariant vectors as row vectors and contravariant as column vectors? |
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Sep 20 |
comment |
Are covariant vectors representable as row vectors and contravariant as column vectors so the usual gradient of a function in cartesian coordinates is or not a covariant vector representable with row vector? I've been lost... |
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Sep 20 |
comment |
Are covariant vectors representable as row vectors and contravariant as column vectors so why on wikipedia is the gradient represented as covariant vector? en.wikipedia.org/wiki/Covariance_and_contravariance_of_vectors So how should I modify my question in order for it to be more precise? |
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Sep 20 |
asked | Are covariant vectors representable as row vectors and contravariant as column vectors |
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Aug 16 |
comment |
Cellular automata rules for quantum mechanics Probably he's referring to Gerard 't Hooft series of papers on cellular automata and quantum mechanics. |
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Aug 14 |
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Recommended scientific book The shape of inner shape of Yau is interesting for a mathematician... |
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Aug 2 |
answered | Human Kinematics:Does velocity or acceleration become zero at the moment of changing human limbs' direction of movement? |
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Aug 1 |
comment |
Is spacetime discrete or continuous? What about experiments to prove/disprove it? |
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Aug 1 |
comment |
Is spacetime discrete or continuous? +1 for the intellectual honesty. It seems that currently humanity has no mathematical tools to deal with this kind of answers. I've found an article on scientic american. The physicist Hogan claims to build an experiment that finally can prove the discreteness or continuity of space. What about this? scientificamerican.com/article.cfm?id=is-space-digital |
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Aug 1 |
accepted | Is spacetime discrete or continuous? |
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Aug 1 |
asked | Is spacetime discrete or continuous? |
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Aug 1 |
awarded | Scholar |
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Aug 1 |
awarded | Supporter |
