شماره ركورد كنفرانس :
3503
عنوان مقاله :
The projective monoid schemes
Author/Authors :
Mansour Aghasi Isfahan University of Technology , Yousef Karimi Isfahan University of Technology
كليدواژه :
Monoid , Quasi-coherent sheaf , Closed monoid scheme , Projective monoid scheme , A-set
عنوان كنفرانس :
چهل و هفتمين كنفرانس رياضي ايران
چكيده لاتين :
For a certain monoid A, let PrA be its associated projective monoid scheme. In this paper,we show that every closed monoid subscheme of PrA can be determined by a certain ideal of the graded monoid S = A[t0, t1, ..., tr]. Furthermore, we show that a monoid scheme Y over
M spec(A) is projective if and only if it is isomorphic to M proj(S) for some finitely generated graded monoid S =∨ n⩾0 Sn, where S0 = A
