Function: hall_e8[Indecomposables]

Calling Sequence:

Indecomposables()

Indecomposables(i)

Parameters:

i - an integer in the range 1..120

Description:

If the function is called without parameter, it returns a list - ordered lexicographically- of the dimension vectors of the indecomposable modules of a quiver algebra of type , of which there are 120.

If the parameter i is specified, the i th entry in this list is returned.

Examples:

> with(hall_e8):

> Indecomposables();

> Indecomposables(115);