The Research Training Network “Algebraic Combinatorics in Europe”
Christian KrattenthalerUniversität Wien, Austria
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I present four highlights from the scientific activities of the eight teams of the Research Training Network “Algebraic Combinatorics in Europe” in Bordeaux, Jerusalem, Linköping, Lyon, Marburg, Marne-la-Vallée, Roma, and Wien:
- the proof of the combinatorial invariance conjecture for Kazhdan–Lusztig polynomials in an important special case;
- the proof of the conjectures on the random assignment problem;
- important progress on the Neggers–Stanley Conjecture on posets and the Charney–Davis conjecture on (certain) simplicial complexes;
- new bijections between maps and trees with interesting applications to the Ising and the hard particle model on maps.