Singular Manual: tau_es

| #### D.6.12.1 tau_es Procedure from library `equising.lib` (see equising_lib). Usage: tau_es(f); f poly Assume: f is a reduced bivariate polynomial, the basering has precisely two variables, is local and no qring. Return: int, the codimension of the mu-const stratum in the semi-universal deformation base. Note: printlevel>=1 displays additional information. When called with any additional parameter, the computation of the Milnor number is avoided (no check for NND). Example:
    LIB "equising.lib";
    ring r=32003,(x,y),ds;
    poly f=(x4-y4)^2-x10;
    tau_es(f);
    ==> 42
See also: esIdeal; invariants; tjurina.

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