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New results on the constrained mock-Chebyshev least squares operator

In this paper, we extend the constrained mock-Chebyshev least squares operator to quasi-uniform grids, preserving the accuracy and applicability of the original approach while addressing the practical challenge of quasi-equispaced nodes. Additionally, we provide an improved bound for the norm of the operator by using a refined bound for its coefficient vector through the direct elimination method. Numerical experiments confirm the efficiency of the proposed technique.

A global method for solving second-kind Volterra–Fredholm integral equations

The paper presents a Nyström-type method to approximate the solution of second-kind Volterra–Fredholm integral equations. Two forms are considered, that is the disjoint form, in which the Volterra and Fredholm operators are additive integrals; and the mixed one, in which the two integrals appear in a single term through composition. In both situations, the right-hand side and the kernel functions may have algebraic singularities at ±1 and hence equations are treated in suitable weighted space...

Synthesis, electronic properties, and catalytic activity of peripherally metalated beta-eta1-Pd(II)-thioalkyl porphyrazine

Synthesis and characterization of noncovalent nanohybrids of a β-η1-Pd(II)-thioethyl porphyrazine complex and graphene nanoflakes

Synthesis and catalytic activity of a β-η1-Pd(II)-thioethyl porphyrazine complex

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Prodotti recenti

New results on the constrained mock-Chebyshev least squares operator

A global method for solving second-kind Volterra–Fredholm integral equations

Synthesis, electronic properties, and catalytic activity of peripherally metalated beta-eta1-Pd(II)-thioalkyl porphyrazine

Synthesis and characterization of noncovalent nanohybrids of a β-η1-Pd(II)-thioethyl porphyrazine complex and graphene nanoflakes

Synthesis and catalytic activity of a β-η1-Pd(II)-thioethyl porphyrazine complex

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