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About a recent paper of Rickard on finitistic dimension

I use $M$ instead of $M_i$ and $d$ instead of $d_i$. For a finite dimensional algebra $A$ over a field $K$ we have in general $D Ext_A^i(Y,DZ)=Tor_i^{A}(Y,Z)$ using the duality $D=Hom_K(-,K)$. Thus $...
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