Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Alessio Del Vigna"'
A slow triangle map with a segment of indifferent fixed points and a complete tree of rational pairs
Publikováno v:
Monatshefte für Mathematik. 194:1-40
We study the two-dimensional continued fraction algorithm introduced in \cite{garr} and the associated \emph{triangle map} $T$, defined on a triangle $\triangle\subset \R^2$. We introduce a slow version of the triangle map, the map $S$, which is ergo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a180723b980006160dc79742b5c8f0c8
https://doi.org/10.1007/s00605-020-01500-w
https://doi.org/10.1007/s00605-020-01500-w
Autor:
Alessio Del Vigna
Publikováno v:
The American Mathematical Monthly. 130:126-126
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd7c2cb8c6afa3399cffe083429672d7
https://doi.org/10.1080/00029890.2022.2148760
https://doi.org/10.1080/00029890.2022.2148760
The interest in the problem of small asteroids observed shortly before a deep close approach or an impact with the Earth has grown a lot in recent years. Since the observational dataset of such objects is very limited, they deserve dedicated orbit de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aaa92490dd3143533f77dbcefd3a6508
http://arxiv.org/abs/2102.11399
http://arxiv.org/abs/2102.11399
Representation and coding of rational pairs on a Triangular tree and Diophantine approximation in ℝ²
Autor:
Alessio Del Vigna, Claudio Bonanno
In this paper we study the properties of the \emph{Triangular tree}, a complete tree of rational pairs introduced in \cite{cas}, in analogy with the main properties of the Farey tree (or Stern-Brocot tree). To our knowledge the Triangular tree is the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5aa2ceeb306298369d169592de5c94a4
https://hdl.handle.net/11568/1084716
https://hdl.handle.net/11568/1084716
We propose an adaptation of the semilinear algorithm for the prediction of the impact corridor on ground of an Earth-impacting asteroid. The proposed algorithm provides an efficient tool, able to reliably predict the impact regions at fixed altitudes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::484eea9912f993bd1340b003bdb1b7ee
http://arxiv.org/abs/2007.05407
http://arxiv.org/abs/2007.05407
Autor:
Alessio Del Vigna
When an asteroid has a few observations over a short time span the information contained in the observational arc could be so little that a full orbit determination may be not possible. One of the methods developed in recent years to overcome this pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83dcd79277f392fdd5d12740b8cece2e
Publikováno v:
Icarus
Icarus, Elsevier, 2019, 321, pp.647-660. ⟨10.1016/j.icarus.2018.12.028⟩
Icarus, 2019, 321, pp.647-660. ⟨10.1016/j.icarus.2018.12.028⟩
Icarus, Elsevier, 2019, 321, pp.647-660. ⟨10.1016/j.icarus.2018.12.028⟩
Icarus, 2019, 321, pp.647-660. ⟨10.1016/j.icarus.2018.12.028⟩
The completeness limit is a key quantity to measure the reliability of an impact monitoring system. It is the impact probability threshold above which every virtual impactor has to be detected. A goal of this paper is to increase the completeness wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd04cef67a9248136b6e4722a6a04b4f