Results 21 to 30 of about 7,347 (247)

A MODULI STACK OF TROPICAL CURVES

open access: yesForum of Mathematics, Sigma, 2020
We contribute to the foundations of tropical geometry with a view toward formulating tropical moduli problems, and with the moduli space of curves as our main example.
RENZO CAVALIERI   +3 more
doaj   +1 more source

Tropical geometry over the tropical hyperfield

open access: yesRocky Mountain Journal of Mathematics, 2022
In this text, we merge ideas around the tropical hyperfield with the theory of ordered blueprints to give a new formulation of tropical scheme theory. The key insight is that a nonarchimedean absolute value can be considered as a morphism into the tropical hyperfield.
openaire   +5 more sources

Watershed controls and tropical cyclone-induced changes in river hydraulic geometry in Puerto Rico

open access: yesJournal of Hydrology: Regional Studies, 2022
Study region: 24 stream gaging sites in Puerto Rico. Study focus: At-a-station hydraulic geometry (AHG), which describes how channel width, depth, and velocity vary with discharge at a river cross section, has long been used to study fluvial processes ...
Yihan Li   +2 more
doaj   +1 more source

A new tropical cyclone surge index incorporating the effects of coastal geometry, bathymetry and storm information

open access: yesScientific Reports, 2021
This study presents a new storm surge hazard potential index (SSHPI) for estimating tropical cyclone (TC) induced peak surge levels at a coast. The SSHPI incorporates parameters that are often readily available at real-time: intensity in 10-min maximum ...
Md. Rezuanul Islam   +3 more
doaj   +1 more source

Tropical Geometry and Mechanism Design

open access: yesCoRR, 2016
We develop a novel framework to construct and analyze finite valued, multidimensional mechanisms using tropical convex geometry. We geometrically characterize incentive compatibility using cells in the tropical convex hull of the type set. These cells are the sets of incentive compatible payments and form tropical simplices, spanned by generating ...
Robert Alexander Crowell, Ngoc Mai Tran
openaire   +2 more sources

Singularities of eight- and nine-particle amplitudes from cluster algebras and tropical geometry

open access: yesJournal of High Energy Physics, 2021
We further exploit the relation between tropical Grassmannians and Gr(4, n) cluster algebras in order to make and refine predictions for the singularities of scattering amplitudes in planar N $$ \mathcal{N} $$ = 4 super Yang-Mills theory at higher ...
Niklas Henke, Georgios Papathanasiou
doaj   +1 more source

On the Interaction between the Depth and Elevation of External Shading Devices in Tropical Daylit Classrooms with Symmetrical Bilateral Openings

open access: yesBuildings, 2022
External shading devices are an important design feature in tropical buildings, particularly for climate mitigation. However, the interaction between the depth and elevation of the shading devices and their impact on indoor daylight performance is not ...
Atthaillah   +3 more
doaj   +1 more source

Light and Dark Cycles Control the Structural Evolution of Photoresponsive Supramolecular Systems

open access: yesAngewandte Chemie, EarlyView.
Here, we report a photoswitchable synthetic peptide that, under light energy cycles, exhibits supramolecular polymorphism coupled to darkness‐driven structural self‐selection. We demonstrate that light sustains a transient assembled state in the form of helical nanoribbons, hindering the system from undergoing a transition to the disassembled state ...
Alejandro Méndez‐Ardoy   +6 more
wiley   +2 more sources

Generating reliable estimates of tropical-cyclone-induced coastal hazards along the Bay of Bengal for current and future climates using synthetic tracks [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2022
Deriving reliable estimates of design water levels and wave conditions resulting from tropical cyclones is a challenging problem of high relevance for, among other things, coastal and offshore engineering projects and risk assessment studies.
T. W. B. Leijnse   +4 more
doaj   +1 more source

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