Macris N., Ruiz J.
A Remark on  the Decay of Superconducting and Magnetic Correlations 
in One-and-Two-Dimensional Hubbard Models.
(16K, Latex)

ABSTRACT.  Upper bounds on the decay of various correlation functions
are derived for a general class of lattice fermion models 
with long range hopping matrix.
These bounds extend previous results of Koma and Tasaki
and rule out the  possibility of magnetic ordering 
and condensation of superconducting electron
pairs in one and two dimensions for finite temperatures.