Introduction:
The group has two primary research interests. The first is concentrated around the study and classification of differentiable manifold and their invariants, mainly in low-dimensional cases. This includes knot theory, contact 3-manifolds, Heegaard Floer theory, Khovanov theory, Seiberg-Witten theory, low-dimensional surgery techniques, and their applications. The second research area is the theory of complex algebraic/analytic varieties, with a special emphasize on the local theory of singularities, including the study of their analytic and topological invariants.
The bridge between the two research areas is realized by the links of singularities, creating common research objectives (e.g., topological and analytical lattice homology, topological invariants of links of singularities, and their effects on analytic invariants).
The department runs a weekly seminar.
Head of Department:

Némethi András
Research Professor
Research Professor
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:I.1.
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Phone:+3614838320
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Email:nemethi.andras (at) renyi.hu
Employees:

Beke Márton
Assistant Research Fellow
Assistant Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:II.5.
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Phone:+36 1 483 8326
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Email:beke.marton (at) renyi.hu

Csépai András
Assistant Research Fellow
Assistant Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:I.2.
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Phone:+36 1 483 8325
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Email:csepai.andras (at) renyi.hu

de la Bodega Domingo-Aldama Javier
Research Fellow
Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:1.2.
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Phone:+36 1 483 8325
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Email:de.la.bodega.javier (at) renyi.hu

Földvári Viktória Andrea
Research Fellow
Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:I/2.
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Phone:1/4838325
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Email:foldvari.viktoria (at) renyi.hu

Alexander Hof
Research Fellow
Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:I.1
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Phone:+3614838320
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Email:hof.alexander (at) renyi.hu

Juhász András
Research Fellow
Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:I/2.
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Phone:1/4838325
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Email:juhasz.andris (at) renyi.hu

Koltai László András
Assistant Research Fellow
Assistant Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:II.2.
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Phone:+36 1 483 8307
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Email:koltai.laszlo (at) renyi.hu

Kubasch Alexander Arnd
Assistant Research Fellow
Assistant Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:Reál 11.
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Phone:+36 1 483 8397
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Email:kubasch.alexander (at) renyi.hu

Marco Marengon
Senior Research Fellow
Senior Research Fellow
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Research group:Low-dimensional topology
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Research department:Algebraic geometry and differential topology
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Room:I.1.
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Phone:+3614838320
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Email:marengon.marco (at) renyi.hu

Matszangosz Ákos
Research Fellow
Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:II.2.
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Phone:+3614838307
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Email:matszangosz.kyriakos.akos (at) renyi.hu

McDonald Clayton
Research Fellow
Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:I.2.
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Phone:+36 1 483 8325
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Email:mcdonald.clayton (at) renyi.hu

Nagy Anita Enikő
Assistant Research Fellow
Assistant Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:II.5.
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Phone:+36 1 483 8326
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Email:nagy.anita.eniko (at) renyi.hu

Nagy János
Research Fellow
Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:I.2.
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Phone:+36 1 483 8325
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Email:nagy.janos (at) renyi.hu

Schefler Gergő
Assistant Research Fellow
Assistant Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:II.2.
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Phone:+36 1 483 8307
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Email:schefler.gergo (at) renyi.hu

Stipsicz András
Director of the Institute, Research Professor
Director of the Institute, Research Professor
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Research group:Low-dimensional topology
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Research department:Algebraic geometry and differential topology
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Room:fsz.3.
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Phone:06 1 483 8355
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Email:stipsicz.andras (at) renyi.hu

Szabó Endre
Research Professor
Research Professor
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:I.4.
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Phone:06 1 483 8336
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Email:szabo.endre (at) renyi.hu

Szabó Szilárd
Senior Research Fellow
Senior Research Fellow
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Research group:Low-dimensional topology
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Research department:Algebraic geometry and differential topology
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Room:III.15
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Phone:+3614838333
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Email:szabo.szilard (at) renyi.hu

Szőke Róbert
Research Professor
Research Professor
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Research group:
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Research department:Algebraic geometry and differential topology
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Room:III.10.
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Phone:+36 1 483 8306
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Email:szoke.robert (at) renyi.hu

Tagliente Simone
Assistant Research Fellow
Assistant Research Fellow
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Research group:
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Research department:Algebraic geometry and differential topology
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Room:I.2.
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Phone:+36 1 483 8325
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Email:tagliente.simone (at) renyi.hu

Sarah Juliet Zampa
Assistant Research Fellow
Assistant Research Fellow
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Research group:-
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Research department:Algebraic geometry and differential topology
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Room:II.5.
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Phone:+3614838326
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Email:zampa.sarah (at) renyi.hu
Events:
Giovanni Framba (University of Pisa): Equivariant grid homology for strongly invertible knots
2025. 07. 11. 10:30 - 2025. 07. 11. 11:30
Nagyterem + Zoom
Algebraic geometry and differential topology seminar
Diego Santoro (University of Vienna): Taut foliations from knot diagrams
2025. 05. 30. 10:30 - 2025. 05. 30. 11:30
Nagyterem + Zoom
Algebraic geometry and differential topology seminar
László A. Koltai (ELTE): Bergman spaces on algebraic curves
2025. 05. 23. 10:30 - 2025. 05. 23. 11:30
Nagyterem + Zoom
Algebraic geometry and differential topology seminar
Matthew Hedden (Michigan State University): Relative Thom conjectures
2025. 05. 20. 14:15 - 2025. 05. 20. 15:15
Turán lecture hall + Zoom
Algebraic geometry and differential topology seminar
Ákos Matszangosz (Rényi Institute): Cohomology of oriented Grassmannians
2025. 04. 25. 10:30 - 2025. 04. 25. 11:30
Rényi Nagyterem + Zoom
Algebraic geometry and differential topology seminar
László Fehér: Hypersurfaces with given singularities using Thom polynomials
2025. 04. 04. 10:30 - 2025. 04. 04. 11:30
Rényi Kutyás terem (Dog room) + Zoom
Algebraic geometry and differential topology seminar
Gergő Pintér (BME): Multifold degeneracy points of quantum systems and singularities of matrix varieties
2025. 03. 28. 10:30 - 2025. 03. 28. 11:30
Rényi Nagyterem + Zoom
Algebrai geometria és differenciáltopológia szeminárium
Lukas Bertsch (University of Vienna): Cornering and Substitution Formulae in the McKay Correspondence
2025. 03. 21. 10:30 - 2025. 03. 21. 11:30
Rényi Nagyterem + Zoom
Algebrai geometria és differenciáltopológia szeminárium
Alberto Cavallo (Rényi Institute): Transverse links in Stein fillable contact 3-manifolds
2025. 02. 14. 11:30 - 2025. 02. 14. 12:30
Rényi, Nagyterem + Zoom
Algebrai geometria és differenciáltopológia szeminárium
Gergő Pintér (BME): Immersions of 3-manifolds and links of simple singularities
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Rényi, Nagyterem + Zoom
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