In this paper we examine curves defined over a field of characteristic 2 which are (Z/2Z)2-covers of the projective line. In particular, we prove which 2-ranks occur for such curves of a given genus and where possible we give explicit equations for such curves.

Forty disposable medical shoe covers were briefly exposed to the surgical floor and were found contaminated by a large number of bacteria. This study also demonstrated live bacteria, including pathogens attached to contaminated shoe covers, can be subsequently transferred to surgical bedsheets. We suggest an infection control policy should be considered to prevent patients returning to their be...

We study the a-numbers and p-ranks of Kummer covers of the projective line, and we give bounds for these numbers.

Let $mathcal{X}$ be a class of $R$-modules‎. ‎In this paper‎, ‎we investigate ;$mathcal{X}$-injective (projective) and DG-$mathcal{X}$-injective (projective) complexes which are generalizations of injective (projective) and DG-injecti‎‎ve (projective) complexes‎. ‎We prove that some known results can be extended to the class of ;$mathcal{X}$-injective (projective) and DG-$mathcal{X}$-injective ...

Content This is the second semester of a fast pace course which covers robot and computer vision The rst semester covers low level vision and mostly no reference to three dimensions This semester covers higher level techniques Illumination Perspective Projective Geometry Analytic Photogrammetry Motion and Surface Structure from Time Varying Image Sequences Image Matching The Consistent Labeling...

For four wide classes of topological rings $\mathfrak R$, we show that all flat left R$-contramodules have projective covers if and only are descending chains cyclic discrete right R$-modules terminate the quotient R$ perfect. Three for which this holds complete, separated associative with a base neighborhoods zero formed by open two-sided ideals such either ring is commutative, or it has count...