Zobrazeno 1 - 10
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pro vyhledávání: '"Da Silva, Sergio"'
Time-lapse full-waveform inversion (FWI) has become a powerful tool for characterizing and monitoring subsurface changes in various geophysical applications. However, non-repeatability (NR) issues caused, for instance, by GPS inaccuracies, often make
Externí odkaz:
http://arxiv.org/abs/2407.07467
Autor:
Noguer, Federico R., Corley, Suber, Pearson, Kyle A., Zellem, Robert T., Simon, Molly N., Burt, Jennifer A., Huckabee, Isabela, August, Prune C., Mansfield, Megan Weiner, Dalba, Paul A., Smith, Peter C. B., Banks, Timothy, Bell, Ira, Daniel, Dominique, Dawson, Lindsay, De Mula, Jesús, Deldem, Marc, Deligeorgopoulos, Dimitrios, Di Sisto, Romina P., Dymock, Roger, Evans, Phil, Follero, Giulio, Fowler, Martin J. F., Fernández-Lajús, Eduardo, Hamrick, Alex, Iannascoli, Nicoletta, Kovacs, Andre O., Kulh, Denis Henrique, Lopresti, Claudio, Marino, Antonio, Martin, Bryan E., Matassa, Paolo Arcangelo, Napoleão, Tasso Augusto, Nastasi, Alessandro, Norris, Anthony, Odasso, Alessandro, Paschalis, Nikolaos I., Pintr, Pavel, Postiglione, Jake, Randolph, Justus, Regembal, François, Rousselot, Lionel, da Silva, Sergio José Gonçalves, Smith, Andrew, Tomacelli, Andrea
We present an updated ephemeris and physical parameters for the exoplanet WASP-77 A b. In this effort, we combine 64 ground- and space-based transit observations, 6 space-based eclipse observations, and 32 radial velocity observations to produce the
Externí odkaz:
http://arxiv.org/abs/2405.19615
Autor:
da Silva, Sérgio Luiz E. F., Costa, Felipe T., Karsou, Ammir, de Souza, Adriano, Capuzzo, Felipe, Moreira, Roger M., Lopez, Jorge, Cetale, Marco
We develop a workflow based on full-waveform inversion (FWI) to estimate P-wave velocities in a deepwater Brazilian pre-salt field using the recently introduced circular shot ocean bottom node (OBN) acquisition geometry. Such a geometry comprises a s
Externí odkaz:
http://arxiv.org/abs/2405.17330
Publikováno v:
da Silva & Kaniadakis (2023) Third International Meeting for Applied Geoscience & Energy Expanded Abstracts. pp. 670-674
The statistical basis for conventional full-waveform inversion (FWI) approaches is commonly associated with Gaussian statistics. However, errors are rarely Gaussian in non-linear problems like FWI. In this work, we investigate the portability of a ne
Externí odkaz:
http://arxiv.org/abs/2405.15536
We characterize the vanishing of the shifted Courant-Nijenhuis torsion as the strongest tensorial integrability condition that can be imposed on a skew-symmetric endomorphism of the generalized tangent bundle.
Comment: 9 pages
Comment: 9 pages
Externí odkaz:
http://arxiv.org/abs/2312.05441
In this paper we study the $s$-th symbolic powers of the edge ideals of complete graphs. In particular, we provide a criterion for finding an Eliahou-Kervaire splitting on these ideals, and use the splitting to provide a description for the graded Be
Externí odkaz:
http://arxiv.org/abs/2309.13017
Publikováno v:
J. Pure Appl. Algebra 228(7), 2024
A regular nilpotent Hessenberg Schubert cell is the intersection of a regular nilpotent Hessenberg variety with a Schubert cell. In this paper, we describe a set of minimal generators of the defining ideal of a regular nilpotent Hessenberg Schubert c
Externí odkaz:
http://arxiv.org/abs/2305.19335
Autor:
Atar, Büşra, Bhaskara, Kieran, Cook, Adrian, Da Silva, Sergio, Harada, Megumi, Rajchgot, Jenna, Van Tuyl, Adam, Wang, Runyue, Yang, Jay
We study the Hadamard product of two varieties $V$ and $W$, with particular attention to the situation when one or both of $V$ and $W$ is a binomial variety. The main result of this paper shows that when $V$ and $W$ are both binomial varieties, and t
Externí odkaz:
http://arxiv.org/abs/2211.14210
Autor:
Da Silva, Sergio, Harada, Megumi
Publikováno v:
Transformation Groups (2023)
We initiate a study of the Gr\"obner geometry of local defining ideals of Hessenberg varieties by studying the special case of regular nilpotent Hessenberg varieties in Lie type A, and focusing on the affine coordinate chart on $\mathrm{Flags}(\mathb
Externí odkaz:
http://arxiv.org/abs/2207.08573
Publikováno v:
Algebraic Combinatorics, Vol. 6 (2023), No. 4, p. 965-997
The geometric vertex decomposability property for polynomial ideals is an ideal-theoretic generalization of the vertex decomposability property for simplicial complexes. Indeed, a homogeneous geometrically vertex decomposable ideal is radical and Coh
Externí odkaz:
http://arxiv.org/abs/2207.06391