In the theory of Lie groups, the irreducibility of a unitary representation
is not preserved in general by restriction to a subgroup. Kirillov's conjecture
says that it is preserved for the groups Gl(n,R) or Gl(n,C) when the subgroup
is the subgroup of matrices leaving invariant a non zero vector. This
conjecture was proved by Barush using a detailed study of nilpotent orbits. In
fact, it is not difficult to see that the conjecture is equivalent to the fact
that some system of partial differential equations has no singular
distributions as solutions.
In the theory of Lie groups, the irreducibility of a unitary representation
is not preserved in general by restriction to a subgroup. Kirillov's conjecture
says that it is preserved for the groups Gl(n,R) or Gl(n,C) when the subgroup
is the subgroup of matrices leaving invariant a non zero vector. This
conjecture was proved by Barush using a detailed study of nilpotent orbits. In
fact, it is not difficult to see that the conjecture is equivalent to the fact
that some system of partial differential equations has no singular
distributions as solutions.
We give a method to produce representations of the braid group $B_n$ of $n-1$
generators ($n\leq \infty$). Moreover, we give sufficient conditions over a non
unitary representation for being of this type. This method produces examples of
irreducible representations of finite and infinite dimension.
We give a method to produce representations of the braid group $B_n$ of $n-1$
generators ($n\leq \infty$). Moreover, we give sufficient conditions over a non
unitary representation for being of this type. This method produces examples of
irreducible representations of finite and infinite dimension.
We give a method to construct new self-adjoint representations of the braid
group. In particular, we give a family of irreducible self-adjoint
representations of dimension arbitrarily large. Moreover we give sufficient
conditions for a representation to be constructed with this method.