Helge Strömdahl (1945-2018)

CombinaTexas 2018 February 10 – 11 , 2018

In this talk we give combinatorial proofs of q-Stirling identities using restricted growth words. This includes a poset theoretic proof of Carlitz’s identity, a new proof of the q-Frobenius identity of Garsia and Remmel and of Ehrenborg’s Hankel q-Stirling determinantal identity. We also develop a two parameter generalization to unify identities of Mercier and include a symmetric function versi...

Helge Kragh the First Subatomic Explanations of the Periodic System

Attempts to explain the periodic system as a manifestation of regularities in the structure of the atoms of the elements are as old as the system itself. The paper analyses some of the most important of these attempts, in particular such works that are historically connected with the recognition of the electron as a fundamental building block of all matter. The history of the periodic system, t...

Ensembl 2018

The Ensembl project has been aggregating, processing, integrating and redistributing genomic datasets since the initial releases of the draft human genome, with the aim of accelerating genomics research through rapid open distribution of public data. Large amounts of raw data are thus transformed into knowledge, which is made available via a multitude of channels, in particular our browser (htt...

Seppo Santavirta 1945 – 2005

Harold Weintraub (1945–1995)

Acreative intellect, he contributed profoundly to our understanding of the molecular biology of development. From his early work on the structure of the eucaryotic chromosome to the recent identification of genes capable of etic-iting an entire program of cellular differentiation, Hal repeatedly identified important problems in biology and solved them in an elegant fashion. For those fortunate ...