Results 41 to 50 of about 83,121 (142)
Tropical Linear Series and Tropical Independence [PDF]
arXiv, 2022 We propose a definition of tropical linear series that isolates some of the essential combinatorial properties of tropicalizations of not-necessarily-complete linear series on algebraic curves. The definition combines the Baker-Norine notion of rank with the notion of tropical independence and has the property that the restriction of a tropical linear ...
arxiv
Maximum Inscribed and Minimum Enclosing Tropical Balls of Tropical Polytopes and Applications to Volume Estimation and Uniform Sampling [PDF]
arXiv, 2023 We consider a minimum enclosing and maximum inscribed tropical balls for any given tropical polytope over the tropical projective torus in terms of the tropical metric with the max-plus algebra. We show that we can obtain such tropical balls via linear programming.
arxiv
Travel Medicine and Infectious Disease, 2023 Background: There is a lack of information about health problems after returning from tropical countries among travelers from Poland. The aim was to create characteristics of diseases imported to Poland from tropical regions and to determine the changes ...
Martyna Bykowska-Tumasz +2 more
doaj
No Evidence of Avian Influenza A H5N1 among Returning US Travelers
Emerging Infectious Diseases, 2007 We reviewed reports to the Centers for Disease Control and Prevention of US travelers suspected of having avian influenza A H5N1 virus infection from February 2003 through May 2006.
Justin R. Ortiz +10 more
doaj +1 more source
História, Ciências, Saúde: Manguinhos, 2009 This article analyzes the discovery of Chagas disease and the parasite that causes it (Trypanosoma cruzi) by Carlos Chagas in 1908/1909, with a special focus on the scientific and social context in which this occurred.
Simone Petraglia Kropf +1 more
doaj +1 more source
Tropical Normal Functions -- Higher Abel-Jacobi Invariants of Tropical cycles [PDF]
arXiv, 2020 We consider the variation of tropical Hodge structure (TVHS) associated to families of tropical varieties. The family of the tropical intermediate Jacobians of the associated tropical Hodge structure defines a bundle of tropical Jacobians, whose sections we call the tropical normal functions.
arxiv
Hyperbolic plane curves near the non-singular tropical limit [PDF]
arXiv, 2021 We determine necessary and sufficient conditions for real algebraic curves near the non-singular tropical limit to be hyperbolic with respect to a point, thus generalising Speyer's classification of stable curves near the tropical limit. In order to obtain the conditions, we develop tools of real tropical intersection theory.
arxiv
Human Rickettsiosis Caused by Rickettsia parkeri Strain Atlantic Rainforest, Urabá, Colombia
Emerging Infectious Diseases, 2020 We describe the clinical, serologic, and molecular findings of a new human rickettsiosis in Colombia. Antibodies against Rickettsia spp. were detected. PCR showed amplification of genes for R. parkeri strain Atlantic Rainforest. This new rickettsiosis of
Margarita Arboleda +6 more
doaj +1 more source
On a tropical dual Nullstellensatz [PDF]
arXiv, 2011 Since a tropical Nullstellensatz fails even for tropical univariate polynomials we study a conjecture on a tropical {\it dual} Nullstellensatz for tropical polynomial systems in terms of solvability of a tropical linear system with the Cayley matrix associated to the tropical polynomial system.
arxiv
Working with Tropical Meromorphic Functions of One Variable [PDF]
arXiv, 2011 In this paper, we survey and study definitions and properties of tropical polynomials, tropical rational functions and in general, tropical meromorphic functions, emphasizing practical techniques that can really carry out computations. For instance, we introduce maximally represented tropical polynomials and tropical polynomials in compact forms to ...
arxiv