Let T be a complex torus and G a finite group acting on T without translations such that T/G is smooth. Consider the subgroup F <= G generated by elements that have at least one fixed point. We prove that there exists a ...

Let A be an abelian variety and G a finite group of automorphisms of A fixing the origin such that A/G is smooth. The quotient A/G can be seen as a fibration over an abelian variety whose fibers are isomorphic to a product ...

We determine a one-to-one correspondence between Milnor fibers and minimal symplectic fillings of a quotient surface singularity (up to diffeomorphism type) by giving an explicit algorithm to compare them mainly via ...

Let V be a regular neighborhood of a negative chain of 2-spheres (ie an exceptional divisor of a cyclic quotient singularity), and let B-p,B-q be a rational homology ball which is smoothly embedded in V. Assume that the ...

Let S(H) be the unit sphere of a Hilbert space H and Up(H) thegroup of unitary operators in H such that u−1 belongs to the p-Schatten idealBp(H). This group acts smoothly and transitively in S(H) and endows it witha natural ...

Sea C una curva projectiva, suave y geom´etricamente conexa definida sobre un cuerpo finito F. Para cada punto cerrado P8 de C, sea R el anillo de funciones que son regulares fuera de P8, y sea K la completacion en P8 ...

Background. The objective of the present histologic animal study was to analyze whether roughness of the titanium surface can influence and/or stimulate the bone growth in defects filled with the blood using a rabbit tibia ...

The set D_A0 , of pairs of orthogonal projections (P,Q) in generic position with fixed difference P−Q=A_0, is shown to be a homogeneous smooth manifold: it is the quotient of the unitary group of the commutant {A_0}′ divided ...