Given a curve of genus 3 with an unramified double cover, we give an explicit description of the associated Prym-variety. We also describe how an unramified double cover of a non-hyperelliptic genus 3 curve can be embedded in the jacobian of a curve of genus 2 over its field of definition and how this can be used to do Chabautyand Brauer-Manin type calculations for curves of genus 5 with an unr...

135. Fosfomycin Susceptibilities Among Uropathogenic Extended Spectrum Beta-Lactamase-producing Enterobacteriacea Lilian Abbo, MD; Aida Casiano-Colón, PhD; Marissa Tysiak, PharmD; Thomas M. Hooton, MD; Medicine, Division of Infectious Diseases, University of Miami Miller School of Medicine, Miami, FL; Integrated Regional Laboratories, Ft Lauderdale, FL; University of Miami Hospital, Miami, FL; ...

Let X1, . . . , Xm denote smooth projective curves of genus gi ≥ 2 over an algebraically closed field of characteristic 0 and let n denote any integer at least equal to 1 + max i=1 gi. We show that the product JX1 × · · · × JXm of the corresponding Jacobian varieties admits the structure of a Prym-Tyurin variety of exponent n. This exponent is considerably smaller than the exponent of the struc...

Marion Korach-André, Paolo Parini, Lilian Larsson, Anders Arner, Knut R. Steffensen, and Jan-Åke Gustafsson Department of Biosciences and Nutrition at NOVUM, Karolinska Institutet; Division of Clinical Chemistry, Department of Laboratory Medicine, Karolinska Institutet at Karolinska University Hospital; Department of Physiology and Pharmacology, Karolinska Institutet, Huddinge, Sweden; and Cent...

Ushbu maqolada asli irlandiyalik bo‘lgan yozuvchisi, musiqachisi va bir qancha inqilobiy fikrlarning tarafdori Etel Lilian Voynichning Rossiyada juda mashhur "So‘na" (“The Gadfly”) romani to‘g‘risida so‘z boradi. U roman bosh qahramonlarining xarakteri ularning harakatlarida, qilgan ishlarida atrofidagilari bilan bo‘ladigan munosabatlarda ochib berilishini yoritadi.

The survey gives an overview of the achievements in topology of real algebraic varieties in the direction initiated in the early 70th by V. I. Arnold and V. A. Rokhlin. We make an attempt to systematize the principal results in the subject. After an exposition of general tools and results, special attention is paid to surfaces and curves on surfaces.

Lunji Song School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China Email: [email protected] Jing Zhang School of Mathematics and Statistics, Huazhong Normal University, Wuhan 430079, China Email: [email protected] Li-Lian Wang Division of Mathematical Sciences, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore Email: lilian@nt...