Cerqueira, Ana Paula Costa; 0009-0000-9719-8719; https://lattes.cnpq.br/9881892782136752(Universidade Federal da BahiaMestrado Profissional em Matemática em Rede Nacional (PROFMAT) UFBABrasilInstituto de Matemática, 2026-01-28)
The study of fractions begins in the initial years of Elementary School, deepening throughout the years until the end of Elementary School. According to data from PISA
2022, about 73% of students recorded low performance ...
Leite, Ênio Carlos da Silva; http://lattes.cnpq.br/8550673231549370(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-12-02)
Let n ≥ 2 and let Bn denote the Artin braid group, also known as the braid group of the disk.
We denote by FBn the framed braid group. In this thesis, we study framed braid groups and
their generalizations. Initially, ...
Soares, Camila Braz; https://orcid.org/0000-0002-3849-5120; http://lattes.cnpq.br/2339623855354710(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-12-15)
This paper investigates robust inference for the Seasonal Integer-Valued Autoregressive model (SINAR(1)), addressing the limitations of the classical Conditional Maximum Likelihood (CML) estimator under data contamination. ...
Santos, Agábio Brasil dos; https://orcid.org/0009-0003-4417-7991; http://lattes.cnpq.br/2597607591696152(Universidade Federal da BahiaPós-Graduação em Matemática (PGMAT) UFBABrasilInstituto de Matemática, 2025-11-11)
This work consists of a study of Iterated Function Systems that contract on average, using concepts and results from Optimal Transport Theory for this analysis. To support the discussion, it was necessary to revisit notions ...
Azevedo, Augusto Ferreira de; https://lattes.cnpq.br/9975731213649097(Universidade Federal da BahiaMestrado Profissional em Matemática em Rede Nacional (PROFMAT) UFBABrasilInstituto de Matemática, 2026-01-07)
The central objective of this research is to investigate the p
otential of the Scratch digital
platform in a lesson sequence with digital educational games aimed at teaching integers to 7th
grade students in elementary ...
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 ...