# Nijankowski V.

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bio website notyet.com location Bucharest, Romania age member for 2 years, 2 months seen 6 hours ago profile views 79

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 Apr2 answered Math for Thermodynamics Basics Mar30 answered Dispersion relation and Heat Capacity Mar21 revised Decomposing a Tensor Product of $SU(3)$ Representations in Irrepswrote instead of +,x the correct characters for direct sum and product. Mar21 suggested suggested edit on Decomposing a Tensor Product of $SU(3)$ Representations in Irreps Mar21 revised How to prove that the symmetrisation Operator is hermitian?deleted 1 characters in body Mar21 comment How to prove that the symmetrisation Operator is hermitian?@Haatschii I've edited my answer, hope it helps you. Mar21 revised How to prove that the symmetrisation Operator is hermitian?added 3954 characters in body Mar20 answered How to prove that the symmetrisation Operator is hermitian? Mar20 comment Results of Statistical Mechanics first obtained by formal mathematical methods@YvanVelenik Yes, I know, but this wasn't the subject so I didn't want to babel about history. Just wanted to emphasize that the theory predicted something that a large part of the community didn't "believe" in. Mar20 answered Couldn't we measure electrons with good enough technology? Mar20 awarded Yearling Mar20 answered Results of Statistical Mechanics first obtained by formal mathematical methods Mar20 answered Operators explaination and momentum operator in QM Mar20 comment Omni-directional motion, resolving three or more vectors?@CodySmith So as I understand, you are trying to find out the direction of motion of your robot given the "forces" applied to it by every wheel. Right? All you have to do is find the resultant force. Here is the wiki link that gives you the basics on the subject en.wikipedia.org/wiki/Net_force (is this what are you looking for?). Hope this helps. Mar19 answered Where are we : On level ground or on a ramp - moving in a train? Mar19 comment Why is $dL = L d\epsilon$?@EdwardStumperd i've edited my answer. Hope its clear now. Mar19 comment Why is $dL = L d\epsilon$?@Ramashalanka my bad, was thinking of something else, thanks for pointing it out. Mar19 revised Why is $dL = L d\epsilon$?added 245 characters in body Mar19 answered Why is $dL = L d\epsilon$? Mar19 comment Point charge 4-current derivation@Anuar Maybe this will help, take the 4-current $j^{\mu}(x)$ and you can rewrite it as $j^{\mu}(x)=\int dy j^{\mu}(y)\delta^{4}(x-y)$. This is just the property of the delta function $f(T)=\int dt f(t)\delta(T-t)$. And with the arguments in my answer you can make the corresponding identifications.