Alejandra Aguilera

Regional Heterogeneity and Temporal Trends of Infant-Juvenile Paracoccidioidomycosis in Argentina: A 15-Year Comparative Study

Gustavo Giusiano, Yone A. Chacón, Alejandra Aguilera, Diana Aguirre et autres

Paracoccidioidomycosis (PCM) is a neglected systemic mycosis in Latin America. This study aims to characterize the epidemiology and clinical profiles of infant PCM cases (0 to 14 years old) over a 15-year period (2008-2023) in the two primary endemic regions of Argentina, …

ar, es (code pays fourni par la source)

Optimal Dynamical Frames

Alejandra Aguilera, Carlos Cabrelli, Felipe Negreira, Victoria Paternostro

Motivated by the dynamical sampling problem, we study frames in an infinite dimensional Hilbert space generated by the iterates of a bounded operator T, also known as dynamical frames. We first characterize the operators that generate Parseval dynamical frames by showing that …

Impact of COVID ‐19 on paracoccidioidomycosis. Which was the most influential: The pandemic or the virus?

Gustavo Giusiano, Fernanda Tracogna, Fernando Antonio Messina, Vanesa Sosa et autres

The impact of COVID-19 on paracoccidioidomycosis (PCM) in Argentina and the consequences generated by the pandemic are discussed. From 2018 to 3 years after the pandemic declaration, 285 proven PCM patients were registered. No association between both diseases was documented. PCM frequency …

ar (code pays fourni par la source)

Convergence and preservation of cyclicity

Alejandra Aguilera, Daniel Seco

Frames by Iterations and Invariant Subspaces

Alejandra Aguilera, Carlos Cabrelli, Diana Carbajal, Victoria Paternostro

This paper presents a characterization of systems of iterations that generate frames of abstract separable Hilbert spaces. The characterization is achieved through a correspondence with a canonical system of iterations that form Parseval frames of certain subspaces of the space of vector-valued …

ar, at (code pays fourni par la source)

Reducing and invariant subspaces under two commuting shift operators

Alejandra Aguilera, Carlos Cabrelli, Diana Carbajal, Victoria Paternostro

ar, at (code pays fourni par la source)

Frames by orbits of two operators that commute

Alejandra Aguilera, Carlos Cabrelli, Diana Carbajal, Victoria Paternostro

ar, at (code pays fourni par la source)

Clinical and Demographic Features of Paracoccidioidomycosis in Argentina: A Multicenter Study Analysis of 466 Cases

Gustavo Giusiano, Fernanda Tracogna, Gabriela Santiso, Florencia Dinorah Rojas et autres

Information on paracoccidioidomycosis (PCM) in Argentina is fragmented and has historically been based on estimates, supported only by a series of a few reported cases. Considering the lack of global information, a national multicentric study in order to carry out a more …

ar (code pays fourni par la source)

Convergence and preservation of cyclicity

Alejandra Aguilera, Daniel Seco

We prove the property that a function is cyclic (resp., non-cyclic) is not preserved by norm convergence in Dirichlet-type spaces $D_α$, and show how other significant quantities for cyclicity do remain preserved under the limit of convergent sequences in $D_α$, providing a …

Reducing and Invariant subspaces under two commuting shift operators

Alejandra Aguilera, Carlos Cabrelli, Diana Carbajal, Victoria Paternostro

In this article, we characterize reducing and invariant subspaces of the space of square integrable functions defined in the unit circle and having values in some Hardy space with multiplicity. We consider subspaces that reduce the bilateral shift and at the same …

at, ar (code pays fourni par la source)

Frames by Orbits of Two Operators that Commute

Alejandra Aguilera, Carlos Cabrelli, Diana Carbajal, Victoria Paternostro

Diagonalization of shift-preserving operators

Alejandra Aguilera, Carlos Cabrelli, Diana Carbajal, Victoria Paternostro

ar (code pays fourni par la source)