A note on ...-constant families of plane curves.
A note on Donaldson polynomials for K3 surfaces.
A Note on Elementary Derivations
2000 Mathematics Subject Classification: Primary: 14R10. Secondary: 14R20, 13N15.Let R be a UFD containing a field of characteristic 0, and Bm = R[Y1, . . . , Ym] be a polynomial ring over R. It was conjectured in [5] that if D is an R-elementary monomial derivation of B3 such that ker D is a finitely generated R-algebra then the generators of ker D can be chosen to be linear in the Yi ’s. In this paper, we prove that this does not hold for B4. We also investigate R-elementary derivations D of Bm...
A note on elliptic curves over finite fields
A note on Enriques' surfaces in characteristic 2
A note on extensions of algebraic and formal gorups I.
A note on extensions of algebraic and formal groups II.
A note on formal groups and zeta functions.
A note on Frobenius divided modules in mixed characteristics
If is a smooth scheme over a perfect field of characteristic , and if is the sheaf of differential operators on [7], it is well known that giving an action of on an -module is equivalent to giving an infinite sequence of -modules descending via the iterates of the Frobenius endomorphism of [5]. We show that this result can be generalized to any infinitesimal deformation of a smooth morphism in characteristic , endowed with Frobenius liftings. We also show that it extends to adic...
A note on functional equations for zeta functions with values in Chow motives
We consider zeta functions with values in the Grothendieck ring of Chow motives. Investigating the –structure of this ring, we deduce a functional equation for the zeta function of abelian varieties. Furthermore, we show that the property of having a rational zeta function satisfying a functional equation is preserved under products.
A note on geodesics in infinite-dimensional Teichmüller spaces.
A Note on Geometric Degree of Finite Extensions of Mappings from a Smooth Variety
A note on global Nash subvarieties and Artin-Mazur theorem
It is shown that every connected global Nash subvariety of is Nash isomorphic to a connected component of an algebraic variety that, in the compact case, can be chosen with only two connected components arbitrarily near each other. Some examples which state the limits of the given results and of the used tools are provided.
A Note on height pairings on polarized abelian varieties
Let be an abelian variety defined over a number field . In this short Note we give a characterization of the endomorphisms that preserve the height pairing associated to a polarization. We also give a functorial interpretation of this result.
A Note on Height Pairings, Tamagawa Numbers, and the Birch and Swinnerton-Dyer Conjecture.
A note on imperfect monomial curves in
A note on indecomposable motivic cohomology classes.
A note on k-very ampleness of a bundle on a blown up plane.
A note on linear preserves of ternary cubic forms
A note on M. Soares’ bounds
We give an intersection theoretic proof of M. Soares’ bounds for the Poincaré-Hopf index of an isolated singularity of a foliation of .