Computation of abstract groups S((d + 1)/2,d) and torus knots K(d, 2)

We have developed a computer program to calculate the abstract groups S((d + 1)/2, d) and the torus knots K(d, 2) which is associated with the same polynomial. When a positive odd integer c ⩾ 1 is given, the program calculates the abstract groups S((d + 1)/2, d) and the torus knots K(d, 2) having the same polynomial. It is general and easy to use.