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A new method with improved phase-lag and stability properties for problems in quantum chemistry-an economical case

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, 2021; 59 (7)

A new FINDIFF (Finite Difference) method with zeroing phase-lag and its derivatives up to order two, for initial or boundary value problems with perio......

A new improved economical finite difference method for problems in quantum chemistry

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, 2021; 59 (7)

A new ECOFINDIFF (economical finite difference method) with vanished phase-lag and its derivatives up to order three, for oscillating and/or periodica......

A new economical method with eliminated phase-lag and its derivative for problems in chemistry

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, 2021; 59 (6)

A new EcoFinDif (Economical Finite Difference) method with eliminated phase-lag and its first derivative, for periodical and/or oscillating initial or......

An economical two-step method with improved phase and stability properties for problems in chemistry

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, 2021; 59 (7)

In this paper we develop a new ECO2STEP (Economical Two-Step Method) method with phase-lag and its derivatives up to order four equal to zero, for ini......

A new method with vanished phase-lag and its derivatives of the highest order for problems in quantum chemistry

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, 2021; 59 (5)

A new FiDif (finite difference) method with zeroing phase-lag and its derivatives up to order seven, for initial or boundary value problems with perio......

Two-step method with vanished phase-lag and its derivatives for problems in quantum chemistry: an economical case

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, 2021; 59 (8)

A new ECON2STEP (Economical Two-Step Method) method with vanished phase-lag and its derivatives up to order five is introduced in this paper, for init......

An economical two-step method with optimal phase and stability properties for problems in chemistry

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, 2021; 59 (8)

A new ECONO2STEP (economical two-step) method with eliminated phase-lag and its derivatives up to order six is developed in this paper. The newly deve......

Complete forcing numbers of hexagonal systems

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, 2021; 59 (7)

As a strengthening of the concept of global forcing number of a graph G, the complete forcing number of G is the cardinality of a minimum edge subset ......

Close-to-zero eigenvalues of the rooted product of graphs

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, 2021; 59 (6)

The construction of vertex-decorated graphs can be used to produce derived graphs with specific eigenvalues from undecorated graphs, which themselves ......

A new FinDiff numerical scheme with phase-lag and its derivatives equal to zero for periodic initial value problems

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, ; ()

A new Finite Difference complete in phase method with vanished derivatives of the Phase-lag up to order five for the initial value problems with perio......

Homotopy perturbation method with three expansions

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, ; ()

A modification of the homotopy perturbation method is suggested with three effective expansions to solve a nonlinear oscillator with damping terms to ......

He-Laplace variational iteration method for solving the nonlinear equations arising in chemical kinetics and population dynamics

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, ; ()

In this article, we suggest an alternative approach for the study of some partial differential equations (PDEs) arising in physical phenomena such as ......

Nice pairs of disjoint pentagons in fullerene graphs

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, ; ()

A subgraph H of a graph G with a perfect matching is called nice, if G-V(H) has a perfect matching. Very recently, Doslic (JMC 58:2204-2222, 2020) poi......

A new finite difference method with optimal phase and stability properties for problems in chemistry

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, ; ()

In the present paper we introduce a new FD (Finite Difference) method with eliminated phase-lag and its derivatives up to order six, with also optimal......

Harary index of Eulerian graphs

期刊: JOURNAL OF MATHEMATICAL CHEMISTRY, ; ()

The Harary index of a connected (molecular) graph is defined as the sum of reciprocals of distances between all its pairs of vertices. In this paper, ......

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