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sm1.restriction

sm1.restriction(I,V,R)
: It computes the restriction of I as a D-module to the set defined by R. V is the list of variables. When the optional variable degree=d is given, only the restrictions from 0 to d are computed. Note that, in case of vector input, RESTRICTION VARIABLES MUST APPEAR FIRST in the list of variable V. We are using wbfRoots to get the roots of b-functions, so we can use only generic weight vector for now.
sm1.restriction(I,V,R | degree=key0)
: This function allows optional variables degree

Algorithm: T.Oaku and N.Takayama, math.AG/9805006, http://xxx.langl.gov

Example:

 sm1.restriction([dx^2-x,dy^2-1],[x,y],[y]);


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