What is the definition of product of ideal sheaves? - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-21T11:32:09Z http://mathoverflow.net/feeds/question/46932 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/46932/what-is-the-definition-of-product-of-ideal-sheaves What is the definition of product of ideal sheaves? MZWang 2010-11-22T11:13:14Z 2010-11-22T11:17:49Z <p>Each book on algebraic geometry write I^2 when it deal with nongsingular varieties, here I is a ideal sheaf. But no one give the definition. I guess it's the sheafification. It's right?</p> <p>Thanks.</p> http://mathoverflow.net/questions/46932/what-is-the-definition-of-product-of-ideal-sheaves/46933#46933 Answer by Sasha for What is the definition of product of ideal sheaves? Sasha 2010-11-22T11:17:49Z 2010-11-22T11:17:49Z <p>It is the image of the map $I \otimes I \to O \otimes O = O$.</p>