Abstract
ABSTRACTLet M and N be differential graded (DG) modules over a positively graded commutative DG algebra A. We show that the Ext-groups defined in terms of semi-projective resolutions are not in general isomorphic to the Yoneda Ext-groups given in terms of equivalence classes of extensions. On the other hand, we show that these groups are isomorphic when the first DG module is semi-projective.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
