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20092025
most citedNew lower bound for the Hilbert number in piecewise quadratic differential systems

64 citations · 81 across the 10 of their papers we have counts for

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Showing 2023 · math.DSShow all

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math.DS2023

On the number of limit cycles in piecewise planar quadratic differential systems

Francisco Braun, Leonardo P. C. da Cruz, Joan Torregrosa

We consider piecewise quadratic perturbations of centers of piecewise quadratic systems in two zones determined by a straight line through the origin. By means of expansions of the…