Singular Manual: par

  | ### 5.1.113 par `Syntax:` `par (` int_expression `)` `Type:` number `Purpose:` `par(n);` returns the n-th parameter of the basering. `Example:`
        ring r=(0,a,b,c),(x,y,z),dp;
        char(r);  // char to get the characteristic
      ==> 0
        par(2);   // par to get the n-th parameter
      ==> (b)
See char; npars; parstr; ring; var.

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