Timeline for Question on an exercise in Hartshorne: Equivalence of categories
Current License: CC BY-SA 2.5
4 events
| when toggle format | what | by | license | comment | |
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| Mar 23, 2010 at 14:48 | comment | added | David E Speyer | It's the usual global sections. Remember that a homorphism of graded modules must preserve degree! | |
| Mar 23, 2010 at 13:58 | vote | accept | roger123 | ||
| Mar 23, 2010 at 13:35 | comment | added | roger123 |
Thank you, Charles. Are you speaking of the "usual" global sections or do one get in fact an isomorphism of graded modules $\Gamma_*(\mathcal{H}om_\mathcal{B}(Y,Z))\cong\hom_\mathcal{A}(\Gamma_*(Y),\Gamma_*(Z))$?
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| Mar 23, 2010 at 13:21 | history | answered | Charles Siegel | CC BY-SA 2.5 |