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Dec 1, 2009 at 21:54 comment added Hideyuki Kabayakawa Yes! All f. g. projective modules are reflexives. But it isn´t a equivalence: for example in R=k[x^2,xy,y^2] the module M=(x^2,xy) is reflexive but it isn´t projective. I´m looking for extras
Dec 1, 2009 at 20:09 history answered Gonçalo Marques CC BY-SA 2.5