Najib Idrissi's math page

About me

Associate professor (maître de conférences) at Université Paris Cité

Institut de Mathématiques de Jussieu–Paris Rive Gauche (IMJ-PRG), deputy manager of the team-project Algebraic Geometry & Topology (TGA)

Scientific coordinator of the ANR Young Researcher grant Structure and Homotopy of Configuration Spaces (SHoCoS)

Junior Member of the Institut Universitaire de France (IUF) for 2025–2030

My full last name is “Idrissi-Kaïtouni” and you may find this spelling in some places, e.g., my email address.

Contact

Email: najib.idrissi-kaitouni@u-paris.fr
Address: Bâtiment Sophie Germain, 8 place Aurélie Nemours, F-75013 Paris, France
Office number: SG-7032 (7th floor)
Phone: (+33) 01 57 27 91 16

Preprints

Plethysm for characters of relative operads and PROPs

Authors

N. I., Erik Lindell.

Publication

Preprint v2, 34 p. (2025).

PDF

PDF.
arXiv:2505.05910

arXiv:2505.05910.
hal-05061606

hal-05061606.
Source

Source.
A model for framed configuration spaces of points

Authors

Ricardo Campos, Julien Ducoulombier, N. I., Thomas Willwacher.

Publication

Preprint v2, 47 p. (2025).

PDF

PDF.
arXiv:1807.08319

arXiv:1807.08319.
hal-03835341

hal-03835341.
Configuration Spaces of Surfaces

Authors

Ricardo Campos, N. I., Thomas Willwacher.

Publication

Preprint v2, 50 p. (2020).

PDF

PDF.
arXiv:1911.12281

arXiv:1911.12281.
hal-02423726

hal-02423726.

Publications

Homotopy Prefactorization Algebras

Authors

N. I., Eugene Rabinovich.

Publication

Res. Math. Sci., 11.45 (2024).

PDF

PDF.
10.1007/s40687-024-00456-9

10.1007/s40687-024-00456-9.
arXiv:2304.13011

arXiv:2304.13011.
hal-04082483

hal-04082483.
MR4763063

MR4763063.
Zbl07875603

Zbl07875603.
Non-formality of Voronov's Swiss-Cheese operads

Authors

N. I., Renato Vasconcellos Vieira.

Publication

Q. J. Math., 75.1, pp. 63–95 (2024).

PDF

PDF.
10.1093/qmath/haad041

10.1093/qmath/haad041.
arXiv:2303.16979

arXiv:2303.16979.
hal-04053257

hal-04053257.
MR4732946

MR4732946.
Zbl07936839

Zbl07936839.
Source

Source.
Configuration Spaces of Manifolds with Boundary

Authors

Ricardo Campos, N. I., Pascal Lambrechts, Thomas Willwacher.

Publication

Astérisque, vol. 449, 134 p., Paris: SMF, ISBN: 978-2-85629-990-6 (2024).

PDF

PDF.
10.24033/ast.1222

10.24033/ast.1222.
arXiv:1802.00716

arXiv:1802.00716.
hal-01721634

hal-01721634.
MR4764220

MR4764220.
Zbl07882597

Zbl07882597.
Curved Koszul duality of algebras over unital versions of binary operads

Author

N. I.

Publication

J. Pure Appl. Algebra, 227.3 (2023).

PDF

PDF.
10.1016/j.jpaa.2022.107208

10.1016/j.jpaa.2022.107208.
arXiv:1805.01853

arXiv:1805.01853.
hal-01786218

hal-01786218.
MR4477956

MR4477956.
Zbl07595193

Zbl07595193.
Real Homotopy of Configuration Spaces: Peccot Lecture, Collège de France, March & May 2020

Author

N. I.

Publication

Lecture Notes in Mathematics, vol. 2303, 210 p., Cham: Springer, ISBN: 978-3-031-04427-4 (2022).

10.1007/978-3-031-04428-1

10.1007/978-3-031-04428-1.
hal-03821309

hal-03821309.
MR4461096

MR4461096.
Zbl07529469

Zbl07529469.
Boardman–Vogt resolutions and bar/cobar constructions of (co)operadic (co)bimodules

Authors

Ricardo Campos, Julien Ducoulombier, N. I.

Publication

High. Struct., 5.1, pp. 293–366 (2021).

PDF

PDF.
10.21136/HS.2021.09

10.21136/HS.2021.09.
arXiv:1911.09474

arXiv:1911.09474.
hal-01786218

hal-01786218.
MR4367224

MR4367224.
Zbl7482172

Zbl7482172.
Formality of a higher-codimensional Swiss-Cheese operad

Author

N. I.

Publication

Algebr. Geom. Topol., 22.1, pp. 55–111 (2022).

PDF

PDF.
10.2140/agt.2022.22.55

10.2140/agt.2022.22.55.
arXiv:1809.07667

arXiv:1809.07667.
hal-01878406

hal-01878406.
MR4413816

MR4413816.
Zbl07518301

Zbl07518301.
The Lambrechts–Stanley Model of Configuration Spaces

Author

N. I.

Publication

Invent. Math., 216.1, pp. 1–68 (2019).

PDF

PDF.
10.1007/s00222-018-0842-9

10.1007/s00222-018-0842-9.
arXiv:1608.08054

arXiv:1608.08054.
hal-01438861

hal-01438861.
MR3935037

MR3935037.
Zbl07051043

Zbl07051043.
Swiss-Cheese Operad and Drinfeld Center

Author

N. I.

Publication

Israel J. Math., 221.2, pp. 941–972 (2017).

PDF

PDF.
10.1007/s11856-017-1579-7

10.1007/s11856-017-1579-7.
arXiv:1507.06844

arXiv:1507.06844.
hal-01438863

hal-01438863.
MR3704940

MR3704940.
Zbl06808424

Zbl06808424.
Opérades et Structures Commutatives à Homotopie Près

Author

N. I.

Publication

Grad. J. Math., 1.1, pp. 9–17 (2016).

PDF

PDF.
hal-03997161

hal-03997161.
MR3848667

MR3848667.
Zbl1497.18028

Zbl1497.18028.
Journal

Journal.

Theses

Structure of Configuration Spaces

Author

N. I.

Publication

Habilitation à Diriger des Recherches (HDR), Université Paris Cité (2025).

PDF

PDF.
Source

Source.
tel-05082275

tel-05082275.
Defense

Defense.
Operadic Formality and Homotopy of Configuration Spaces

Author

N. I.

Publication

Doctoral thesis, Université de Lille (2017).

PDF

PDF.
Source

Source.
tel-01731389

tel-01731389.
2017LIL10078

2017LIL10078.
Defense

Defense.
Homologie et complexes de déformations d’opérades $E_n$

Author

N. I.

Publication

Master's thesis, Université Paris Diderot (2014).

PDF

PDF.

Algèbre (2025−2026)

Institution

Université Paris Cité.

Cursus

M1 Mathématiques-Informatique Cryptographie (S1).

Responsibilities

Lectures: 24h, Exercise sessions: 33h.

Notes

Notes.
TD

TD.
CC1 (corrigé)

CC1 (corrigé).
CC2 (corrigé)

CC2 (corrigé).
Exam (corrigé)

Exam (corrigé).

International Conference on Operad Theory and Related Topics @ TianYuan Mathematics Research Center (TYMRC)

Title

TBA.

Event

International Conference on Operad Theory and Related Topics.

Location

TianYuan Mathematics Research Center (TYMRC).

On

On [TBA].
Moduli spaces and graph complexes in algebra, geometry and physics @ Les Diablerets

Title

TBA.

Event

Moduli spaces and graph complexes in algebra, geometry and physics.

Location

Les Diablerets.

On

On [TBA].

Event page

Event page.
Séminaire de géométrie @ Institut de Mathématiques de Jussieu-Paris Rive Gauche

Title

Introduction aux espaces de configuration des variétés.

Event

Séminaire de géométrie.

Location

Institut de Mathématiques de Jussieu-Paris Rive Gauche.

On

On January 26, 2026.

Event page

Event page.
Notes

Notes.
Séminaire ART @ Université de Strasbourg

Title

Pléthysme pour les opérades colorées et les prop(érade)s.

Event

Séminaire ART.

Location

Université de Strasbourg.

On

On November 18, 2025.

Related

Related.

Event page

Event page.
Notes

Notes.
Soutenance Habilitation à Diriger des Recherches (HDR) @ Université Paris Cité

Title

Structure of Configuration Spaces.

Event

Soutenance Habilitation à Diriger des Recherches (HDR).

Location

Université Paris Cité.

On

On May 22, 2025.

Related

Related.

PDF

PDF.
Slides

Slides.
Algebra/Topology Seminar @ University of Copenhagen

Title

(Non-)formality of Swiss-Cheese operads.

Event

Algebra/Topology Seminar.

Location

University of Copenhagen.

On

On March 10, 2025.

Related

Related.

Event page

Event page.
Notes

Notes.
Séminaire de topologie @ Université de Lille

Title

(Non-)formalité des opérades Swiss-Cheese.

Event

Séminaire de topologie.

Location

Université de Lille.

On

On January 24, 2025.

Related

Related.

Event page

Event page.
Notes

Notes.
Topology Intercity Seminar (TopICS) @ Utrecht Universiteit

Title

(Non-)formality of Swiss-Cheese operads.

Event

Topology Intercity Seminar (TopICS).

Location

Utrecht Universiteit.

On

On December 12, 2024.

Related

Related.

Event page

Event page.
Notes

Notes.
Topology seminar @ Università degli studi di Roma "Tor Vergata"

Title

(Non-)formality of Swiss-Cheese operads.

Event

Topology seminar.

Location

Università degli studi di Roma "Tor Vergata".

On

On December 6, 2024.

Related

Related.

Event page

Event page.
Notes

Notes.
Séminaire "Des Mathématiques" @ ENS de Paris

Title

De l'ordre dans les tresses.

Event

Séminaire "Des Mathématiques".

Location

ENS de Paris.

On

On December 4, 2024.

Event page

Event page.
Notes

Notes.

ArXiv's latest language policy & governance

Published

Published February 2, 2026.
Using SageMath to compute Massey products

Published

Published December 18, 2025.
Appointment at the Institut Universitaire de France

Published

Published June 5, 2025.

Updated

Updated November 25, 2025.
Habilitation defended successfully

Published

Published May 23, 2025.

PDF

PDF.
Slides

Slides.
Source

Source.
Fun with DALL-E 2

Published

Published September 3, 2022.
ANR Young researcher project “Structure and Homotopy of Configuration Spaces” (SHoCoS)

Published

Published July 5, 2022.
“Real Homotopy of Configuration Spaces” is out

Published

Published June 27, 2022.
LaTeX shenanigans

Published

Published April 19, 2022.

Source

Source.
Using math software for teaching calculus

Published

Published April 11, 2022.
Peccot Lecture notes accepted in Lecture Notes in Mathematics

Published

Published January 26, 2022.

10.1007/978-3-031-04428-1

10.1007/978-3-031-04428-1.

Najib Idrissi's math page

About me

Contact

Research

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Teaching for 2025−2026

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