Bo Nilsson (1933-2001)

Nilsson Solutions for Irregular A-hypergeometric Systems

We study the solutions of irregular A-hypergeometric systems that are constructed from Gröbner degenerations with respect to generic positive weight vectors. These are formal logarithmic Puiseux series that belong to explicitly described Nilsson rings, and are therefore called (formal) Nilsson series. When the weight vector is a perturbation of (1, . . . , 1), these series converge and provide ...

What Is a Sequence of Nilsson Type?

Sequences of Nilsson type appear in abundance in Algebraic Geometry, Enumerative Combinatorics, Mathematical Physics and Quantum Topology. We give an elementary introduction on this subject, including the definition of sequences of Nilsson type and the uniqueness, existence, and effective computation of their asymptotic expansion.

Canynge Hall 1933-1969

ust over thirty-five years ago the newly formed Univer-Department of Preventive Medicine was opened at anynge Hall, a former hotel (Plate V), by the then 'hister of Health, Sir Hilton Young. He described the ?Ccasion as the celebration of a marriage of the City Bristol with the fair nymph of knowledge, and Dr. anley Badock, in proposing the vote of thanks, hoped at it would be a lasting and hap...

An ab initio study of the electronic structure of the boron oxide neutral (BO), cationic (BO⁺), and anionic (BO⁻) species.

The BO neutral, cationic, and anionic molecular species have been painstakingly studied through multireference configuration interaction and single reference coupled cluster methods employing basis sets of quintuple cardinality. Potential energy curves have been constructed for 38 (BO), 37 (BO(+)), and 12 (BO(-)) states and the usual molecular parameters have been extracted most of which are in...

Michael Heidelberger, 1933