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This category marks all the ICTP posts containing the pdf file of the paper/book.

On the closedness of sets with the fixed point property for contractions

2 years ago

Abstract It is proved by examples that there are (connected) non-closed sets with the fixed point property for contractions in…

Inhomogeneous potentials producing homogeneous orbits

2 years ago

Abstract We prove that, in general, a given two-dimensional inhomogeneous potential \(V(x,y)\) does not allow for the creation of homogeneous…

Global complexities for infinite sequences

2 years ago

Abstract AuthorsMira-Cristiana Anisiu Tiberiu Popoviciu Institue of Numerical Analysis, Romanian Academy, Romania Keywords? Paper coordinatesM.-C. Anisiu, Global complexities for infinite…

Special families of orbits for the Hénon-Heiles type potential

2 years ago

Abstract For a Henon-Heiles type potential, with undetermined coefficients, the possibility for a material point to describe a family of…

Two-dimensional inverse problem of Dynamics for families in parametric form

2 years ago

Abstract The two-dimensional inverse problem of dynamics is considered for nonconservative force fields, both in inertial and rotating frames. The…

Families of similar orbits in the inverse problem of Dynamics

2 years ago

Abstract The family of orbits given in advance in the inverse problem of dynamics can be described in implicit or…

A solvable version of the direct problem of Dynamics

2 years ago

Abstract Given any two-dimensional potential \(V(x,y)\), we find (if there exists, of course) without integration of the pertinent equation of…

Families of straight lines in rotating frames

2 years ago

Abstract In the light of the inverse problem of dynamics, we establish families of straight lines, possibly traced by a…

Families of straight lines in planar potentials

2 years ago

Abstract It is shown that all planar potentials V(x, y) that can give rise, among other conditions, to monoparametric families of straight…

Maximal complexity of finite words

2 years ago

Abstract The subword complexity of a finite \(\omega\) of length \(N\) is a function which associates to each \(n\leq N\)…

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