Peter Štefan (or Peter Stefan) (1941, Bratislava, Slovak Republic – 18 June 1978, Tryfan, Wales) was a Slovak mathematician who was known for his works on dynamical systems and mathematical entropy.
However there are a number of peaks (notably Helm Crag in the Lake District and The Cobbler in the Scottish Highlands) that involve a scramble to reach the highest point.
•
Tryfan is one of the very few mountains in Great Britain, apart from the Cuillin of Skye, to require the use of hands (as well as feet) on the ascent.
Tryfan |
Richard Hughes Williams (1878 – 26 July 1919), or Dic Tryfan, was a Welsh language writer of short stories, born in Rhosgadfan in the old county of Caernarfonshire (Gwynedd), north Wales.