Weakly quasihomogeneous hypersurface singularities in positive characteristic.
Weierstrass gaps and curves on a scroll.
Weierstrass multiplicative points on a compact Riemann surface.
Weierstrass points and double converings of curves. With application: Symmetric numerical semigroup which cannot be realized as Weierstrass semigroups.
Weierstrass points and moduli of curves
Weierstrass points and Weierstrass pairs on singular plane curves.
Weierstrass Points in Characteristic p.
Weierstrass points in characteristic p.
Weierstrass Points of the Universal Curve.
Weierstrass points on arithmetic surfaces.
Weierstrass points on schemes.
Weierstrass points on trigonal curves of genus five
Weierstrass Points with First Non-Gap Four on a Double Covering of a Hyperelliptic Curve
2000 Mathematics Subject Classification: Primary 14H55; Secondary 14H30, 14H40, 20M14.Let H be a 4-semigroup, i.e., a numerical semigroup whose minimum positive element is four. We denote by 4r(H) + 2 the minimum element of H which is congruent to 2 modulo 4. If the genus g of H is larger than 3r(H) − 1, then there is a cyclic covering π : C −→ P^1 of curves with degree 4 and its ramification point P such that the Weierstrass semigroup H(P) of P is H (Komeda [1]). In this paper it is showed that...
Weierstrass Points with First Non-Gap Four on a Double Covering of a Hyperelliptic Curve II
2000 Mathematics Subject Classification: Primary 14H55; Secondary 14H30, 14J26.A 4-semigroup means a numerical semigroup whose minimum positive integer is 4. In [7] we showed that a 4-semigroup with some conditions is the Weierstrass semigroup of a ramification point on a double covering of a hyperelliptic curve. In this paper we prove that the above statement holds for every 4-semigroup.
Weierstrass semigroups and the canonical ideal of non-trigonal curves.
Weierstrass Weight of Gorenstein Singularities with one or two branches.
Weighted Gaussian maps.
Weights of Weierstrass Points in Double Coverings of Curves of Genus One or Two.
When is a complex elliptic curve the product of two real algebraic curves?
When is a group homomorphism a covering homomorphism?