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Publications by Hessel Posthuma

On the Algebraic Index for Riemannian Étale Groupoids

Letters in Mathematical Physics
Nonlinear PhysicsMathematical PhysicsStatistical
2009English

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Étale Groupoids, Eta Invariants and Index Theory

Journal für die Reine und Angewandte Mathematik
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2005English

Groupoids and Crossed Objects in Algebraic Topology

Homology, Homotopy and Applications
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1999English

Étale $K$-Theory. II. Connections With Algebraic $K$-Theory

Annales Scientifiques de l'Ecole Normale Superieure
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1982English

Riemannian Geometric Realizations for Ricci Tensors of Generalized Algebraic Curvature Operators

2009English

Exactness of the Reduction on Étale Modules

Journal of Algebra
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2011English

Fuzzy Ideals on Ordered AG-Groupoids

International Journal of Analysis and Applications
2020English

An Algebraic Index Theorem for Non-Smooth Economies

Journal of Mathematical Economics
Applied MathematicsEconomicsEconometrics
2001English

On Groupoids Defined by Commutators

Proceedings of the American Mathematical Society
MathematicsApplied Mathematics
1978English

Weight Decompositions on Étale Fundamental Groups

American Journal of Mathematics
Mathematics
2009English

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