Antunes, Gleberson Gregorio da Silva; https://lattes.cnpq.br/7793947609844319(UNIVERSIDADE FEDERAL DA BAHIAPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2026-02-24)
A Dunford–Pettis operator is a linear operator that maps weakly convergent sequences into norm-convergent sequences. This work investigates the properties of positive operators defined on Banach lattices, with an emphasis ...
Azevedo, Arthur Rios de; https://orcid.org/0000-0002-9154-2133; https://lattes.cnpq.br/7147796523952771(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-12-18)
Research aimed at estimating causal effects of interventions on time-to-event outcomes in observational studies faces challenges, notably when the goal is to compare groups in the presence of confounding. Propensity ...
Reis, Gábrio Ravel Souza; http://lattes.cnpq.br/4574772254962424(Universidade Federal da BahiaDepartamento de Matemática (DMA) UFBABrasilInstituto de Matemática, 2025-08-25)
This work investigates how the fractal geometry of a space influences the speed at which orbits return to small neighborhoods of their initial points. The object of study is a dynamical system that preserves a probability ...
Pereira, Ivalbert dos Santos; http://lattes.cnpq.br/7796884613795107(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-06-30)
We are experiencing an increasing development and adoption of statistical learning models (or machine learning) frameworks. Additionally, the vast amounts of data used for training can have unintended effects concerning ...
Santos, George Anderson Alves dos; http://lattes.cnpq.br/2238124102978748(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-08-28)
Reliability and maintenance have become crucial in industrial systems, leading to the develop
ment of associated theories and methodologies. In a globalized and highly competitive market,
producing highly reliable products ...
Figueirêdo, Danuzia Nascimento; https://lattes.cnpq.br/8495226335229286(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-12-12)
This work addresses two classification problems. First, we classify 1-dimensional connected dually
flat manifolds M that are toric in the sense of (1), and show that the corresponding torifications
are complex space ...
Jesus, Rafael Oliveira de; https://lattes.cnpq.br/1927700189636032(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-12-17)
This work addresses the analysis of three evolution problems with fractional derivative-type damping,
investigating the existence, uniqueness, and asymptotic behavior of solutions.
The first problem consists of a ...
Sá, Italo Estrela de Souza; https://orcid.org/0009-0000-6269-0279; https://lattes.cnpq.br/3753073582407754(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-08-27)
Measuring the impact of public policies requires identifying the specific effect of an intervention on a given outcome, isolating it from external and confounding influences. This study proposes an evaluation of the Bolsa ...
Bacelar, Leonardo Newton Paiva; http://lattes.cnpq.br/9648117004137117(Universidade Federal da BahiaMestrado Profissional em Matemática em Rede Nacional (PROFMAT) UFBABrasilInstituto de Matemática, 2025-12-11)
This study proposes a didactic sequence for teaching fractions aimed at upper elementary school students, based on possible real-life experiences they may have encountered. The goal is to make this mathematical content ...
Mota, João Roberto Figueiredo de Almeida; http://lattes.cnpq.br/2505790542609260(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-07-29)
In this work, we define the invariant Σ₁ of finitely generated groups. We compute this invariant in the case of the Total and Pure Braid Groups of the Torus. To develop the theory and its application, an in-depth study of ...
Boaventura, Brenda Lima; https://lattes.cnpq.br/2536907206027012(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-08-07)
Logistic Regression (LR) is widely used in credit risk assessment as it models the relationship between a binary response variable and a set of predictors. However, the traditional application of this technique overlooks ...
Silva, Angela Lima da; https://lattes.cnpq.br/1582007949170364(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-07-18)
Studies have shown that certain survival datasets are not adequately represented by
the proportional hazards model proposed by Cox (1972), highlighting the need for alternative
approaches that accommodate non-proportional ...
Silva, Wanessa Muricy; http://lattes.cnpq.br/1370020629163620(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-07-24)
In this master’s dissertation, we characterize the most general one-dimensional Brownian motion under some Markovian behavior at zero via the study of its infinitesimal generators. The class of processes here considered ...
Rocha, Jamile Ceci dos Santos; http://lattes.cnpq.br/1258349042931159(Universidade Federal da BahiaMestrado Profissional em Matemática em Rede Nacional (PROFMAT) UFBABrasilInstituto de Matemática, 2025-06-27)
In the school context, in order to foster students’ interest in mathematical knowledge, many teachers revisit pedagogical planning and teaching practices, diversify instructional methodologies, and propose interdisciplinary ...
Silva, Izamara Ferreira; http://lattes.cnpq.br/9705361024665448(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-08-25)
Let K be an infinite field of characteristic , 2, E is the infinite-dimensional
Grassmann algebra over this field, and φ is an involution on E. Based primarily on [1],
in this work, we present a description of the sets ...
Pereira, Daniela Wanderley(Universidade Federal da BahiaUFBABrasil, 2025-06-12)
The teaching sequence is the result of research developed in the National Network of Mathematics Graduate Programs (PROFMAT) at the Federal University of Bahia (UFBA). It was conducted at a public school in the municipality ...
Pereira, Daniela Wanderley; http://lattes.cnpq.br/3855572199036557(Universidade Federal da BahiaMestrado Profissional em Matemática em Rede Nacional (PROFMAT) UFBABrasilInstituto de Matemática, 2025-06-12)
This research presents a pedagogical proposal for investigative activities in high school, developed within the scope of the professional master's degree program at PROFMAT/UFBA, to help students build their professional ...
Vieira, Lucas Santos; http://lattes.cnpq.br/7341032141646178(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2024-02-26)
Beta and Simplex regression models have been widely used to analyze variables that represent
rates, proportions or index, that is, variables measurable in the open interval (0.1). In some
phenomena these variables are ...
Almeida, Rafael Toledo Costa de; https://orcid.org/0000-0002-4731-7975; http://lattes.cnpq.br/2192564435787089(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-04-22)
In survival analysis, the primary interest is often the time until the occurrence of a single event; however, there are situations where interest lies in multiple events, and the occurrence of one event precludes the ...
Silva, Kim Leone Souza da; https://orcid.org/0009-0003-0609-4167; http://lattes.cnpq.br/4234453341183971(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2024-12-06)
The human impact on the planet is evident, and the need to mitigate these effects is becoming increasingly urgent. Atmospheric pollution, for example, is intrinsically linked to the environment and human health. Particulate ...