Parry-Romberg syndrome is a rare clinical entity characterised by progressive hemifacial atrophy with appearance of 'saber'. Various neurological and otorhinolaryngological disorders are associated with this syndrome. The association of Parry -Romberg syndrome with Spasmodic dysphonia has rarely been reported. A 37 year old female presented with progressive atrophy of tissues of left side of fa...

Concentration and equi-distribution, near the unit circle, in Solomyak’s set, of the union of the Galois conjugates and the beta-conjugates of a Parry number β are characterized by means of the Erdős-Turán approach, and its improvements by Mignotte and Amoroso, applied to the analytical function fβ(z) = −1 + ∑ i≥1 tiz i associated with the Rényi β-expansion dβ(1) = 0.t1t2 . . . of unity. Mignot...

The beta-conjugates of a base of numeration β > 1, β being a Parry number, were introduced by Boyd, in the context of the Rényi-Parry dynamics of numeration system and the beta-transformation. These beta-conjugates are canonically associated with β. Let β > 1 be a real algebraic number. A more general definition of the beta-conjugates of β is introduced in terms of the Parry Upper function fβ(z...

Parry showed that every continuous transitive piecewise monotonic map τ of the interval is conjugate (by an order preserving homeomorphism) to a uniformly piecewise linear map T (i.e., one with slopes ±s). In the current article, it is shown that the map T is unique. This is proven by showing that any order-preserving conjugacy between two continuous transitive uniformly piecewise linear maps i...

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 ...