  We consider the equivariant quantum differential equation for the projective
space $P^{n-1}$. We prove an equivariant gamma theorem for $P^{n-1}$, which
describes the asymptotics of the differential equation at its regular singular
point in terms of the equivariant characteristic gamma class of the tangent
bundle of $P^{n-1}$. We describe the Stokes bases of the differential equation
at its irregular singular point in terms of the exceptional bases of the
equivariant K-theory algebra of $P^{n-1}$ and a suitable braid group action on
the set of exceptional bases.
  Our results are an equivariant version of the well-know results of B.
Dubrovin and D. Guzzetti.
