Singular Manual: decompopts

| #### D.4.6.1 decompopts Procedure from library `decomp.lib` (see decomp_lib). Usage: decompopts(); or decompopts("reset"); Return: nothing Note: in the first case, it shows the setting of the control parameters; in the second case, it kills the user-defined control parameters and resets to the default setting which will then be displayed. int DECMETH; Method for computing the univariate decomposition 0 : (default) Kozen-Landau 1 : von zur Gathen int IMPROVE Choice of coefficients for the decomposition of a non-monic polynomials f. 0 : leadcoef( ) = leadcoef( ) and are monic 1 : (default), content( ) = 1 int MINS of a non-monic polynomials f. 0 : g(0) = f(0), h(0) = 0 [ueberlegen fuer complete] 1 : (default), g(0)=0, h(0) = f(0) 2 : Tschirnhaus int DECORD; The order in which the decomposition will be computed 0 : minfirst 1 : (default) maxfirst int DEGONE; decompose also polynomials built on linear ones 0 : (default) 1 : Example:
    LIB "decomp.lib";
    decompopts();
    ==>
    ==>   === Global variables for decomp.lib ===
    ==>
    ==>  -- DECMETH (int) not defined, implicitly 1
    ==>  -- MINS (int) not defined, implicitly 0
    ==>  -- IMPROVE (int) not defined, implicitly 1

User manual for Singular version 4.3.0p1, 2022, generated by texi2html.