okj
Reputation
319
Next privilege 500 Rep.
Access review queues
2 12
Impact
~9k people reached

• 0 posts edited

# 44 Actions

 Oct 31 accepted Reference for Kirchhoff's Circuit Laws Oct 31 asked Reference for Kirchhoff's Circuit Laws Apr 18 awarded Popular Question Mar 17 awarded Nice Question Oct 13 awarded Popular Question Oct 9 awarded Notable Question Jul 2 awarded Curious Oct 10 comment Reference for the polar parameterization of quaternions @Trimok: Perfect, thank you! Oct 10 accepted Reference for the polar parameterization of quaternions Oct 9 asked Reference for the polar parameterization of quaternions Jul 4 awarded Nice Question Jul 2 comment How to evaluate this sum of coupling coefficients? Specifically: $$n \in \left[0,\infty\right)$$ $$l,l_1,l_2,\lambda_1,\lambda_2 \in \left[0,n\right]$$ $$m \in \left[-l,l\right]$$ $$m_1 \in \left[-l_1,l_1\right]$$ $$m_2 \in \left[-l_2,l_2\right]$$ $$\mu_1 \in \left[-\lambda_1,\lambda_1\right]$$ $$\mu_2 \in \left[-\lambda_2,\lambda_2\right]$$ ($n$ is an even integer, all other indices are integers) Jul 1 awarded Promoter Jun 26 comment How to evaluate this sum of coupling coefficients? @Vibert: $n \geq 0$ is an even integer, $0 \leq l \leq n$ is an integer, all other indices take integer values and their limits follow from the definition of the CG coefficients and 6j symbols. Sorry about not stating that before. Jun 25 asked How to evaluate this sum of coupling coefficients? Feb 13 awarded Tumbleweed Dec 13 awarded Popular Question May 18 awarded Yearling Mar 14 comment General procedure for Clebsch-Gordan expansions Thank you,I need to find the analogous equation that you gave for the spherical harmonics above, for harmonic functions on $S^3$; do you know of a book/paper where I can find the derivation you mentioned? Mar 14 accepted General procedure for Clebsch-Gordan expansions