William Llywelyn Parry-Jones

William Llywelyn Parry-Jones

William Parry-Jones, who died in July at the age of sixty-two, was Professor of Child and Adolescent Psychiatry at the University of Glasgow and Honorary Consultant to both the Greater Glasgow Mental Health Services Trust and the Royal Hospital for Sick Children, Yorkhill. A most distinguished clinician and teacher, Parry-Jones was also a productive and influential historian of psychiatry. His ...

Parry Syllogisms

Parry discusses an extension of Aristotle’s syllogistic that uses four nontraditional quantifiers. We show that his conjectured decision procedure for validity for the extended syllogistic is correct even if syllogisms have more than two premises. And we axiomatize this extension of the syllogistic. 1 Background and motivation Parry [2] discusses an extension of the syllogistic in which sentenc...

Dr. Robert Hughes Parry

Parry Expansions of Polynomial Sequences

We prove that the sum-of-digits function with respect to certain digital expansions (which are related to linear recurrences) and similarly defined functions evaluated on polynomial sequences of positive integers or primes satisfy a central limit theorem. These digital expansions are special cases of numeration systems associated to primitive substitutions on finite alphabets, the digits of whi...

Caleb Parry of Bath

Nobody, so far as I know, has collated and set down the achievements of physicians from the West Country, though they form a galaxy as bright as any. Our only claim to some of these great men is that they were born in this part of England; but it was in the West Country that others, and not the least distinguished, practised, pioneered and made their names. The best known is surely Edward Jenne...