Swinging and Twisting
A geometric dissection is a cutting of a geometric figure into pieces that can be arranged to form another figure. They are employed in visual demonstrations of relationships such as Pythagoras’ theorem, and as mathematical puzzles such as Loyd and Dudeney’s hinged dissection of a quadrilateral triangle to a square. For those fascinated by beautiful geometric objects, Frederickson presents his second collection of dissections, hinged rather than simply cut, and including swings and twists for 3D puzzles. Off-mint with a felt-tip mark on lower trimmed edge.
Entropy of Hidden Markov Processes and Connections to Dynamical Systems
Papers from the Banff International Research Station Workshop
The mathematics of hidden Markov processes (HMPs) can be applied to many kinds of noise-related technologies, from speech and optical character recognition to biomolecular sequence analysis. This collection of nine papers from a 2007 workshop at the Banff International Research Station covers the entropy rate problem, or measure of randomness, of HMPs, with reference to informational theory, dynamical systems, statistical mechanics and probability theory.
Atlas of Great Comets
Ronald Stoyan’s engrossing atlas gives full, richly illustrated accounts of 30 of the most important comets that have been witnessed and documented in modern times. For each appearance, from the Great Comet of 1471 (none has ever come closer to Earth) to Comet McNaught in 2007, there is astronomical data, a description of the comet’s orbit and visibility, the history of its discovery and observation, and its wider cultural and scientific impact.