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Forschungsseminar Differentialgeometrie

20.11.2025, 16:15  –  Campus Golm, Haus 9, Raum 1.22
Forschungsseminar Differentialgeometrie

Codimension 2 transfer of signatures in L theory

Yuetong Luo (Göttingen)

The signature of a closed manifold is an important invariant in geometric topology. Recently, Higson, Xie, and Schick proved an invariance theorem for the K-theoretic signature in codimension 2. They... 

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11.12.2025, 16:15 Uhr  –  Raum 1.22, Haus 9
Forschungsseminar Differentialgeometrie

Hodge Dualities in the Perturbation Setup and Applications:Perturbed Zeta Determinant and Analytic Torsion

Ihsane Malass

We consider the perturbation of the exterior differential by a closed one-form \(a\), \(d_a := d + a \wedge \cdot\), on a manifold with boundary. This gives rise to the perturbed (or twisted) de Rham... 

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18.12.2025, 16:15  –  TBA
Forschungsseminar Differentialgeometrie

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Nadine Große (Freiburg)

TBA

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22.01.2026, 16:15 Uhr  –  TBA
Forschungsseminar Differentialgeometrie

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Koen van den Dungen

TBA

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29.01.2026, 16:15  –  Building 9, Room 1.22 (Joint session with Analysis group)
Forschungsseminar Differentialgeometrie

Equivalence between local and global Hadamard States with Robin boundary conditions on half-Minkowski spacetime

Claudio Dappiaggi (Pavia)

We construct the fundamental solutions and Hadamard states for a Klein-Gordon field in half-Minkowski spacetime with Robin boundary conditions in arbitrary dimensions using a generalisation of the... 

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