14:00-15:30, Room LB921-4, 9th floor Library Building, Concordia<BR><BR>

<B>
Jack Sonn (Technion)</b><BR><BR>

<i> Abelian extensions of global fields with all  
local degrees equal to n and the n-torsion subgroup of the Brauer group.</i>

<BR><BR>
<B>Abstract</b>:  
Let K be a global field, n a positive integer.  Then there  
exists an abelian extension L/K whose local degree at every finite  
place of K equals n and whose local degree at every real place of K  
equals 2 when n is even.   It follows that the n-torsion subgroup of  
the Brauer group of K equals the relative Brauer group Br(L/K).   
(Joint work with Hershy Kisilevsky)

<BR><BR>