Seminars
On chain polynomials of posets
2024-06-26
Speaker: Leonardo Saud Maia Leite (KTH Royal Institute of Technology, Sweden)
The chain polynomial of a finite lattice \( \mathcal{L} \) is given by \( p_\mathcal{L} (x) = \sum_{k \geq 0} c_k(\mathcal{L})x^k \), where \( c_k(\mathcal{L}) \) is the number of chains of length \( k \) in \( \mathcal{L} \). The chain polynomials of posets in several important classes have...
Gap labelling for periodic Jacobi matrices on trees
2024-09-24
Speaker: Barry Simon (Caltech, USA)
https://www.mat.uc.pt/~pgsfop/activities.html...
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