Takashi Ichinose and Hideo Tamura
Note on the norm convergence of the unitary 
Trotter product formula
(386K, Postscript)

ABSTRACT.  When the unitary Trotter product 
formula converges in operator norm is discussed, 
and the obtained results are applied to the unitary group generated 
by the Dirac operator and the relativistic Schr\"odinger operator 
with suitable potentials.