A tensor-like coefficient which gives the difference between partial derivatives of two coordinates with respect to the other coordinate,
Commutation Coefficient
See also
Christoffel Symbol, Partial DerivativeExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Commutation Coefficient." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/CommutationCoefficient.html