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20022011
most citedThe UKIRT Infrared Deep Sky Survey (UKIDSS)

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14 papers · 1 filter

math.AG2009

Smoothing of rational m-ropes

Edoardo Ballico, Elizabeth Gasparim, Thomas Köppe

In a recent paper, Gallego, González and Purnaprajna showed that rational 3-ropes can be smoothed. We generalise their proof and obtain smoothability of rational -ropes for $m \…

math.AG2009

Euclid meets Bezout: Intersecting algebraic plane curves with the Euclidean algorithm

Jan Hilmar, Chris Smyth

We show how the Eulcidean algorithm for polynomials can be used to find the intersection points, with multiplicities, of two plane algebraic curves.

math.AG20096 cited

Totally nonnegative cells and matrix Poisson varieties

K. R. Goodearl, S. Launois, T. H. Lenagan

We describe explicitly the admissible families of minors for the totally nonnegative cells of real matrices, that is, the families of minors that produce nonempty cells in the cell…

math.AG2008

Exceptional del Pezzo hypersurfaces

Ivan Cheltsov, Jihun Park, Constantin Shramov

We compute global log canonical thresholds of a large class of quasismooth well-formed del Pezzo weighted hypersurfaces in . As a corollary we…

math.AG2008

On some Fano--Enriques threefolds

Ilya Karzhemanov

We give a classification of Fano threefolds with canonical Gorenstein singularities such that possess a regular involution, which acts freely on some smooth surface in $|-K…

math.AG20082 cited

Factorial threefold hypersurfaces

Ivan Cheltsov

Let be a hypersurface in of degree that has at most isolated ordinary double points. We prove that is factorial in the case when has at most $(d-1)…