output
19982025
most citedGaia Data Release 1. Open cluster astrometry: performance, limitations, and future prospects

100 citations

18 papers

q-bio.PE2025

Extending a Phylogeny-based Method for Detecting Signatures of Multi-level Selection for Applications in Artificial Life

Matthew Andres Moreno, Sanaz Hasanzadeh Fard, Luis Zaman +1

Multilevel selection occurs when short-term individual-level reproductive interests conflict with longer-term group-level fitness effects. Detecting and quantifying this phenomenon…

q-bio.PE2024★ 1 cited

Ecology, Spatial Structure, and Selection Pressure Induce Strong Signatures in Phylogenetic Structure

Matthew Andres Moreno, Santiago Rodriguez-Papa, Emily Dolson

Evolutionary dynamics are shaped by a variety of fundamental, generic drivers, including spatial structure, ecology, and selection pressure. These drivers impact the trajectory of…

math.FA2018

Extension Of The Bauer's Maximum Principle For Compact Metrizable Sets

Mohammed Bachir

Let X be a nonempty convex compact subset of some Haus-dorff locally convex topological vector space S. The well know Bauer's maximum principle stats that every convex upper semi-c…

math.FA2017

A convex extension of lower semicontinuous functions defined on normal Hausdorff space

Mohammed Bachir

We prove that, any problem of minimization of proper lower semicontinuous function defined on a normal Hausdorff space, is canonically equivalent to a problem of minimization of a…

math.OC2017★ 1 cited

Discrete time pontryagin principles in banach spaces

Mohammed Bachir, Joël Blot

The aim of this paper is to establish Pontryagin's principles in a dicrete-time infinite-horizon setting when the state variables and the control variables belong to infinite dimen…

astro-ph.SR2017★ 100 cited

Gaia Data Release 1. Open cluster astrometry: performance, limitations, and future prospects

Gaia Collaboration, F. van Leeuwen, A. Vallenari +589

Context. The first Gaia Data Release contains the Tycho-Gaia Astrometric Solution (TGAS). This is a subset of about 2 million stars for which, besides the position and photometry,…