Keng Wiboonton

activity

20112025

most citedIsomorphism Theorems for Gyrogroups and L-Subgyrogroups

69 citations · 85 across the 10 of their papers we have counts for

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Showing 2017Show all

2 papers · 1 filter

math.SP2017

On the normal centrosymmetric Nonnegative inverse eigenvalue problem

Somchai Somphotphisut, Keng Wiboonton

We give sufficient conditions of the nonnegative inverse eigenvalue problem (NIEP) for normal centrosymmetric matrices. These sufficient conditions are analogous to the sufficient…

math.RA2017

A characterization of trace zero bisymmetric nonnegative $5 \times 5$ matrices

Somchai Somphotphisut, Keng Wiboonton

Let $λ_{1} \geq λ_{2} \geq λ_{3} \geq λ_{4} \geq λ_{5} \geq - λ_{1}$ be real numbers such that $\sum_{i = 1}^{5} λ_{i} = 0$ . In \cite{oren}, O. Spector prove that a necessary and sufficient condition…

On the normal centrosymmetric Nonnegative inverse eigenvalue problem

A characterization of trace zero bisymmetric nonnegative 5×5 matrices

A characterization of trace zero bisymmetric nonnegative $5 \times 5$ matrices