Computing the complexity of the relation of isometry between separable Banach spaces.

Julien Melleray Computing the complexity of the relation of isometry between separable Banach spaces. 128-131 2007 53 Math. Log. Q. 2 http://dx.doi.org/10.1002/malq.200610032 db/journals/mlq/mlq53.html#Melleray07