I am interested in the graph $\Gamma_f$ of a morphism
$f: X\rightarrow Y$ between two sufficiently nice schemes $X,Y$.
One knows that it is a closed subset of $X\times Y$ (when the schemes are nice, say varieties over a field).
I would like to know the following: if you endow it with the reduced structure, what are the stalks of it's structure sheaf in a point $(x,f(x))$ ?
Thanks you very much!