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math.CA2020
Strong convergence theorem for Walsh-Kaczmarz-Fejér means
Nata Gogolashvili, Károly Nagy, George Tephnadze
As main result we prove that Fejér means of Walsh-Kaczmarz-Fourier series are uniformly bounded operators from the Hardy martingale space to the Hardy martingale space $H…
math.CA2020
The existence and unicity of numerical solution of initial value problems by Walsh polynomials approach
Károly Nagy
Chen and Hsiao gave the numerical solution of initial value problems of systems of linear differential equations with constant coefficients by Walsh polynomials approach. This resu…