centra

1) I will discuss issues related to the mechanical equilibrium in  
multi-(rotating) black hole spacetimes.
2) I will review the Weyl and inverse scattering techniques in 4 and 5  
dimensions.
3) I will present solutions, obtained using the Weyl and inverse  
scattering techniques, describing two Kerr black holes in four  
dimensions and two Myers-Perry black holes in five dimensions and  
discuss some physical properties.