- #1

Artusartos

- 247

- 0

[itex](i j)(k) = k[/itex] if k is not equal to i or j

[itex](i j)(k) = i[/itex] if k is not equal to j

[itex](i j)(k) = j[/itex] if k = i

My question:

I thought the product of permuations is again a permutation, but here they are just equal to numbers. Can anybody explain why?

Thanks in advance