Alexandru OANCEA - Page professionnelle

Alexandru OANCEA

Professeur
Université de Strasbourg

Institut de Recherche Mathématique Avancée (IRMA)
Fellow USIAS

Responsable du Magistère de Mathématiques de Strasbourg
Membre du bureau de l'École Doctorale ED 269 MSII

Institut de Recherche Mathématique Avancée (IRMA)
Université de Strasbourg
Bureau I-403
7 Rue René Descartes, 67084 Strasbourg, France
TEL : (+33) (0)3 68 85 01 50

EMAIL :

Keywords: symplectic topology, algebraic topology, Hamiltonian dynamics, geometry and topology.

Current mathematical interests: Floer theory, moduli spaces of curves and algebraic structures, loop spaces and string topology.

I am a member of the Editorial Board of Astérisque, a publication of the French Mathematical Society. You are welcome to submit your papers or monographs!

ARTICLES/PAPERS

My papers are available on arXiv. Reviews are available on MathSciNet (with subscription)

Recent papers

(with J.-F. Barraud, M. Damian, V. Humilière) Floer Homology with DG Coefficients. Applications to cotangent bundles, 2024. 123 pp.

(with J. Latschev) BV bialgebra structures in Floer theory and string topology, 2024. 76 pp.

(with J.-F. Barraud, M. Damian, V. Humilière) Morse homology with DG coefficients, 2023. 232 pp.

(with K. Cieliebak) CoFrobenius bialgebras, Poincaré duality, and graded TQFT, 2022. 45 pp.

(with K. Cieliebak) Reduced symplectic homology and the secondary continuation map, 2022. 55 pp.

(with K. Cieliebak and N. Hingston) Loop coproduct in Morse and Floer homology, J. Fixed Point Theory Appl., 25:59 (2023), 84 pp. Part of the collection "Symplectic geometry - A Festschrift in honour of Claude Viterbo’s 60th birthday".

(with K. Cieliebak) Multiplicative structures on cones and duality, 2020-2022. 87 pp. To appear in J. Symplectic Geom.

(with K. Cieliebak and N. Hingston) Poincaré duality for loop spaces, 2020-2022. 79 pp.

(with D. Vaintrob) Deligne-Mumford operad as a trivialization of the circle action, 2020-2023. 70 pp.

(with K. Cieliebak, appendix written jointly with P. Albers) Symplectic homology and the Eilenberg-Steenrod axioms. Algebr. Geom. Topol. 18 (2018), no. 4, 1953-2130.

(with P. Albers and U. Frauenfelder) Local systems on the free loop space and finiteness of the Hofer-Zehnder capacity. Math. Ann. 367 (2017), no. 3-4, 1403-1428.

(with T. Ekholm) Symplectic and contact differential graded algebras. Geom. Topol. 21 (2017), no. 4, 2161-2230.

(with F. Bourgeois) S¹-equivariant symplectic homology and linearized contact homology. Int. Math. Res. Not. IMRN 2017, no. 13, 3849-3937.

Edited book (with J. Latschev)

Free Loop Spaces in Geometry and Topology. Including the monograph Symplectic cohomology and Viterbo's theorem by Mohammed Abouzaid. IRMA Lectures in Mathematics and Theoretical Physics, 24. European Mathematical Society (EMS), Zürich, 2015. vi+500 pp. ISBN: 978-3-03719-153-8.

SÉMINAIRES / SEMINARS

Séminaire interdisciplinaire de l'ITI IRMIA++ (Institut de Recherche en Mathématiques, Applications & Interactions)
Séminaire Géométrie et applications de l'IRMA
Séminaire GT3 de l'IRMA
Séminaire Symplectique - Zoominar
Séminaire Symplectix (Paris)
This Strange Endeavour Called Research -- An Experiment for PhD students. #1 (Mar. 23, 2023), #2 (Nov. 15, 2023)

ÉVÈNEMENTS / EVENTS

From Hamiltonian Dynamics to Symplectic Topology and Beyond. A 2024 celebration of Claude Viterbo and his mathematics
3-7 June 2024 | IHP, Paris, France

Floer Homotopy Theory (ANR COSY), Jan. 23-25, 2023

Oberwolfach Mini-Workshop: Flavors of Rabinowitz Floer and Tate Homology, Nov. 26 - Dec. 1, 2023

Strasbourg-Heidelberg Symplectic Geometry Day, Nov. 16, 2023

European Talbot 2018 Workshop, July 29 - August 4, 2018

IMJ-PRG 2016 Summer School "Symplectic topology, sheaves, and mirror symmetry", June 27-July 8, 2016

États de la Recherche : Géométrie symplectique et de contact (Paris, École Normale Supérieure, 7-8-9 janvier 2013)

GDT "Variétés de Weinstein" 2012-2013 (à Jussieu, un mardi sur deux de 15h15 à 17h, à partir du 13 novembre 2012)

POLYCOPIÉS DE COURS / LECTURE NOTES

"Réduction des endomorphismes", polycopié du cours Algèbre linéaire et bilinéaire IIb, Sorbonne Université, L2 Mathématiques, 2019-2020. Version du 23 avril 2020.

"Fibrés vectoriels, classes caractéristiques, dualité de Poincaré", polycopié du cours de Topologie algébrique, Sorbonne Université, M2 Mathématiques Fondamentales, 2018-2019. Version du 3 décembre 2018.

"Géométrie différentielle", polycopié du cours de Géométrie différentielle, Université Pierre et Marie Curie/Sorbonne Université, M1 Mathématiques, 2014-2017. Version du 16 septembre 2016.