Results 51 to 60 of about 83,121 (142)

Tropical surfaces [PDF]

open access: yesarXiv, 2015
We present tools and definitions to study abstract tropical manifolds in dimension 2, which we call simply tropical surfaces. This includes explicit descriptions of intersection numbers of 1-cycles, normal bundles to some curves and tropical Chern cycles and numbers.
arxiv  

The global fight to develop antipoverty vaccines in the anti-vaccine era

open access: yesHuman Vaccines & Immunotherapeutics, 2018
Antipoverty vaccines are the vaccines targeting a group of approximately 20 neglected tropical diseases (NTDs), as currently defined by the World Health Organization (WHO).
Peter J. Hotez
doaj   +1 more source

The Publication and Historical Significance of Modern Chinese Medical Reports [PDF]

open access: yesUisahak
Unlike Western medical journals such as The Lancet which focused on Western-centric medical cases, Medical Reports analyzed medical and sanitary issues in East Asia, including China, Korea, and Japan and sought solutions to these problems.
Qing JIN
doaj   +1 more source

Tropical linear spaces and tropical convexity [PDF]

open access: yesarXiv, 2015
In classical geometry, a linear space is a space that is closed under linear combinations. In tropical geometry, it has long been a consensus that tropical varieties defined by valuated matroids are the tropical analogue of linear spaces. It is not difficult to see that each such space is tropically convex, i.e.
arxiv  

Parasitic Diseases of Upper Gastrointestinal Tract [PDF]

open access: yesThe Korean Journal of Helicobacter and Upper Gastrointestinal Research
Korea was a hotspot for parasitic infections until modern times. However, following economic development, improved health and hygiene and farming methods, and successful implementation of active deworming programs, human parasites are rare.
Heung Up Kim
doaj   +1 more source

Tropical Disease, the Hydra Technology Will Not Slay

open access: yesMcGill Journal of Medicine, 2020
N ...
Jennifer M Grant
doaj   +1 more source

Smooth tropical surfaces with infinitely many tropical lines [PDF]

open access: yesarXiv, 2007
We study the tropical lines contained in smooth tropical surfaces in R^3. On smooth tropical quadric surfaces we find two one-dimensional families of tropical lines, like in classical algebraic geometry. Unlike the classical case, however, there exist smooth tropical surfaces of any degree with infinitely many tropical lines.
arxiv  

“Localising Tropical Medicine”: A History of the Medical Research Institute (MRI) in Colonial Lagos, 1907–1920s

open access: yesModern Africa, 2021
This article explores an early episode in the history of tropical medicine in colonial Lagos, British West Africa. It probes into the activities and outputs of scientists who operated within the Medical Research Institute (MRI) as a way to further ...
Adedamola Seun Adetiba
doaj  

Geometry over the tropical dual numbers [PDF]

open access: yesarXiv, 2016
We introduce tropical dual numbers as an extension of tropical semiring. By this innovation, one can work with honest ideals, instead of congruences, and recover the Euclidean topology on affine tropical spaces similar to Zariski's approach in classical algebraic geometry.
arxiv  

Varieties of Tropical Ideals are Balanced [PDF]

open access: yesarXiv, 2020
Tropical ideals, introduced in arXiv:1609.03838, define subschemes of tropical toric varieties. We prove that the top-dimensional parts of their varieties are balanced polyhedral complexes of the same dimension as the ideal. This means that every subscheme of a tropical toric variety defined by a tropical ideal has an associated class in the Chow ring ...
arxiv  

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