Geivison Ribeiro

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20242026

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4 papers · 1 filter

math.FA2026

The super Alternative Daugavet property, unconditional bases and SCD geometry

Geivison Ribeiro, Daniel L. Rodríguez-Vidanes

We answer negatively the 1-unconditional part of Question 6.4, by Langemets, Lõo, Martín, Perreau and Rueda Zoca, and, more generally, prove that no infinite-dimensional Banach spa…

math.FA2026

On the $(n, ℵ_{0})$ -Lineability of Nowhere Differentiable Functions

Fábio Lima, Mônica Santos, Geivison Ribeiro

We establish a countable-dimensional extension property for the family of continuous nowhere differentiable functions, which we denote by $\ND[0,1]$. More precisely, we prove that…

math.FA2026

Extension of hypercyclic and frequently hypercyclic subspaces

Felipe Carvalho Silva, Geivison Ribeiro, Régis Varão

We focus on the existence of large linear structures within the sets of hypercyclic and frequently hypercyclic vectors. For operators $T$ satisfying Kitai's Criterion or the Freque…

math.FA2026

Weak Minimizing Property and the Compact Perturbation Property for the Minimum Modulus

Anselmo Raposo, Geivison Ribeiro

For an operator $T : X \to Y$ , denote $m (T) = in f {∥ T x ∥ : x \in S_{X}}$ . A sequence $(x_{n})$ in $S_{X}$ is said to be minimizing for $T$ if $∥ T x_{n} ∥ \to m (T)$ . The weak minimizing property…

The super Alternative Daugavet property, unconditional bases and SCD geometry

On the (n,ℵ0​)-Lineability of Nowhere Differentiable Functions

Extension of hypercyclic and frequently hypercyclic subspaces

Weak Minimizing Property and the Compact Perturbation Property for the Minimum Modulus

On the $(n, ℵ_{0})$ -Lineability of Nowhere Differentiable Functions