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pro vyhledávání: '"Sabatini, Marco"'
Autor:
Sabatini, Marco
We consider non-singular and Jacobian maps whose components are polynomial in the variable y. We prove that if a map has y-degree one, then it is the composition of a triangular map and a quasi-triangular map. We also prove that non-singular y-quadra
Externí odkaz:
http://arxiv.org/abs/2302.05394
Publikováno v:
In Acta Astronautica November 2024 224:183-194
Autor:
Sabatini, Marco
Fessler and Gutierrez \cite{Fe,Gu} proved that if a non-singular planar map has Jacobian matrix without eigenvalues in $(0,+\infty)$, then it is injective. We prove that the same holds replacing $(0,+\infty)$ with any unbounded curve disconnecting th
Externí odkaz:
http://arxiv.org/abs/2202.05542
Autor:
Sabatini, Marco, Iannelli, Paolo, Gasbarri, Paolo, Palmerini, Giovanni B., Angeletti, Federica, Ankersen, Finn
Publikováno v:
In Acta Astronautica August 2024 221:296-308
Autor:
Sabatini, Marco
We prove that if a non-singular planar map $\Lambda \in C^2(R^2,R^2)$ has a convex component, then $\Lambda$ is injective. We do not assume strict convexity.
Externí odkaz:
http://arxiv.org/abs/2107.12043
Autor:
Sabatini, Marco
We extend the planar Markus-Yamabe Jacobian Conjecture to differential systems having jacobian matrix with eigenvalues with negative or zero real parts.
Externí odkaz:
http://arxiv.org/abs/2106.15461
Publikováno v:
In Composite Structures 1 January 2024 327
Autor:
Sabatini, Marco
The thesis describes the research conducted towards the development of more sustainable methods for amide bond formation. The first chapter describes the importance of amide bond formation and the methods currently used for this type of transformatio
Externí odkaz:
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.747469
Publikováno v:
In Acta Astronautica September 2023 210:576-588
Autor:
Sabatini, Marco
We prove that measure-preserving symmetries of an $n$-dimensional differential system preserve its divergence and the divergence derivatives along the solutions. Also, we prove that measure-preserving reversibilities preserve odd-order divergence der
Externí odkaz:
http://arxiv.org/abs/1802.01361