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GL4(q) for any q, or SL4(q) for q = 0, 2 mod 4


Labels of unipotent almost characters:
  1:  [ 1, 1, 1, 1 ]
  2:  [ 2, 1, 1 ]
  3:  [ 2, 2 ]
  4:  [ 3, 1 ]
  5:  [ 4 ]

In row "i,j,k:" we give the scalar product of the tensor product of almost 
characters i and j with almost character k, if this is nonzero and i >= j.
1, 1, 1:    q^3+2*q+1
1, 1, 2:    q^2+2*q+3
1, 1, 3:    q+2
1, 1, 4:    3
1, 1, 5:    1
2, 1, 1:    q^2+2*q+3
2, 1, 2:    2*q+6
2, 1, 3:    3
2, 1, 4:    3
2, 2, 1:    2*q+6
2, 2, 2:    q+9
2, 2, 3:    5
2, 2, 4:    4
2, 2, 5:    1
3, 1, 1:    q+2
3, 1, 2:    3
3, 1, 3:    2
3, 1, 4:    1
3, 2, 1:    3
3, 2, 2:    5
3, 2, 3:    1
3, 2, 4:    2
3, 3, 1:    2
3, 3, 2:    1
3, 3, 3:    2
3, 3, 4:    1
3, 3, 5:    1
4, 1, 1:    3
4, 1, 2:    3
4, 1, 3:    1
4, 2, 1:    3
4, 2, 2:    4
4, 2, 3:    2
4, 2, 4:    2
4, 3, 1:    1
4, 3, 2:    2
4, 3, 3:    1
4, 3, 4:    1
4, 4, 2:    2
4, 4, 3:    1
4, 4, 4:    2
4, 4, 5:    1
5, 1, 1:    1
5, 2, 2:    1
5, 3, 3:    1
5, 4, 4:    1
5, 5, 5:    1

(C) 2005 Frank Lübeck