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Minimum depth of double cross product extensions
(2020)
In this paper we explore minimum odd and minimum even depth sub- algebra pairs in the context of double cross products of finite dimensional Hopf algebras. We start by defining factorization algebras and outline how subring ...
Lyapunov exponents of probability distributions with non-compact support
(2020)
A recent result of Bocker–Viana asserts that the Lyapunov exponents of compactly supported probability distributions in GL(2, R) depend continuously on the distribution. We investigate the general, possibly concompact ...
Rapid shift in microbial community structure in a neutral hydrothermal hot spring from Costa Rica
(2020)
In this work, we characterize the geochemistry and microbial community of Bajo las Peñas, a neutral (pH 6.5-7.4), hot spring (T = 62.0-68.0°C) located near Turrialba Volcano, Costa Rica. The microbiota at its two sources ...
An overlapping preconditioner for 2D virtual problems posed in H(rot) with irregular subdomains
(2022)
We present a two-level overlapping Schwarz preconditioner for problems posed in H(rot) in two dimensions, that extends previous methods for Nédélec elements (triangular meshes) to general polygonal partitions (virtual ...
Diversity of deep-sea echinoderms from Costa Rica
(2022-07-31)
Echinoderms are a highly diverse group and one of the most conspicuous in the deep sea, playing ecological key roles. We present a
review about the history of expeditions and studies on deep-sea echinoderms in Costa Rica, ...
Polyploidy in Orchid Breeding, Advances and Perspectives
(2022-02-15)
The orchid market is a dynamic horticultural business in which novelty and beauty command
high prices. The development of miniature to large and showy flowers, in addition to fragrance,
is mainly of interest. Overall ...
Reconocimiento automático de acordes basado en una clasificación de las clases de altura por su volumen y una estimación del bajo
(2021)
El reconocimiento automático de acordes en audio es una tarea difícil. En los últimos 20 años se han realizado numerosas investigaciones para lograrlo, en las que destaca recientemente el uso de redes neuronales profundas. ...
The Impact of Help-Seeking for Depression: A Mathematical Model
(2022)
For years and with the Covid-19 pandemic, mental illnesses such as depression have emerged. According to the World Health Organization, an average of 5\% of the population in a country suffers from depression. The ...
Modeling the university drinking culture phenomenon
(2022-11-03)
We study a susceptible-drinker-recovered (SDR) model for the drinking culture phenomenon in university atmospheres. We find conditions for this model to have extinction and endemic equilibrium points. We analyze different ...
Fungi with history: Unveiling the mycobiota of historic documents of Costa Rica
(2022-06-12)
Through nondestructive techniques, we studied the physicochemical characteristics and mycobiota of five key historic documents from Costa Rica, including the Independence Act of Costa Rica from 1821. We determined that for ...