NCTermsOfDegree[expr,aListOfVariables,indices]

Aliases: None

Description: $NCTermsOfDegree[expr,aListOfVariables,indices]$ returns an expression such that each term is homogeneous of degree given by the $indices$ in the variables of $aListOfVariables$. For example, $NCTermsOfDegree[x**y**x + x**x**y + x**x + x**w,\{x,y\},indices]$ returns $x ** x ** y + x ** y ** x$ if $indices = \{2,1\}$, return $x**w$ if $indices = \{1,0\}$, return $x**x$ if $indices=\{2,0\}$ and returns 0 otherwise. This is like Mathematica's Coefficient command, but for the noncommuting case. However, it actually gives the terms and not the coefficients of the terms.

Arguments: $expr$ is an algebraic expression, $aListOfVariables$ is a list of variables and indices is a list of positive integers which is the same length as $aList$.

Comments / Limitations: Not available before NCAlgebra 1.0