Title 



Extensions of certain modules over the 1st weyl algebra
 
Author 



 
Abstract 



Using a method stemming from the representation theory of finitedimensional algebra's, results about a category of Artinian modules over the first Weyl algebra consisting of objects having composition series with composition factors isomorphic to prescribed ones have been obtained. This category corresponds to a tube of Z/2Z type and it is serial and standard. The AuslanderReiten formula in this category describing the functor Ext(A) (, ) in terms of the ARquiver has been derived. The dimensions of Ext(A)(M, N) for M and N in different tubes are calculated.   
Language 



English
 
Source (journal) 



Science in China: series A : mathematics, physics, astronomy and technological sciences.  Beijing, 1989  1995  
Publication 



Beijing : 1994
 
ISSN 



10016511
 
Volume/pages 



37:5(1994), p. 535546
 
ISI 



A1994NQ16600003
 
