29 citations · 78 across the 12 of their papers we have counts for
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math.DS2019★ 22 cited
A new simple proof for Lum-Chua's conjecture
Victoriano Carmona, Fernando Fernández-Sánchez, Douglas D. Novaes
The already proved Lum-Chua's conjecture says that a continuous planar piecewise linear differential system with two zones separated by a straight line has at most one limit cycle.…
math.CA2019★ 2 cited
Integral characterization for Poincaré half-maps in planar linear systems
Victoriano Carmona, Fernando Fernández-Sánchez
The intrinsic nature of a problem usually suggests a first suitable method to deal with it. Unfortunately, the apparent ease of application of these initial approaches may make the…