W. Barrera

activity

20102026

most citedComparison theorems for Lorentzian length spaces with lower timelike curvature bounds

14 citations · 43 across the 18 of their papers we have counts for

collaborators

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4 papers · 1 filter

math.CV2026

Unimodular Zeros of Selmer's Harmonic Trinomials

Gerardo Barrera, Waldemar Barrera, Juan Pablo Navarrete

Let $n > k$ be positive integers and let $ε, δ \in {- 1, 1}$ . In this note, we classify the unimodular zeros of the harmonic trinomial $H_{\varepsilon,δ}:\mathbb{C}\to \mathbb…

math.CV2026

On the Parameter Spaces of Harmonic Trinomial Equations

Waldemar Barrera, Lucia Campa, Juan Pablo Navarrete

We analyze the parameter space of harmonic trinomial equations of the form $z^{n + m} + b z^{m} + c$ , where $n, m \in Z^{+}$ are coprime and $b, c \in C$ . Using version…

math.CV2023★ 4 cited

The stability region for Schur stable trinomials with general complex coefficients

Gerardo Barrera, Waldemar Barrera, Juan Pablo Navarrete

In this paper, we characterize the stability region for trinomials of the form $f (ζ) := a ζ^{n} + b ζ^{m} + c$ , $ζ \in C$ , where $a$ , $b$ and $c$ are non-zero complex numbers and $n…

math.CV2021★ 9 cited

On the number of roots for harmonic trinomials

Gerardo Barrera, Waldemar Barrera, Juan Pablo Navarrete

In this manuscript we study the counting problem for harmonic trinomials of the form $a ζ^{n} + b ζ^{m} + c$ , where $n, m \in N$ , $n > m$ , and $a$ , $b$ and $c$ are non-zero com…