Crystal Tipps and Alistair films for the Central Office of Information. The series has no dialogue but rather is accompanied by a full musical soundtrack composed by Paul Reade; however, when shown on "Captain Kangaroo" in the U.S. in the 1970s the series did have voice-over narration by Cosmo "Gus" Allegretti in his high-pitched "Mister Moose" voice. Crystal's Christmas Special was shown on 25 December 1974. Crystal Tipps and Alistair Crystal Tipps and Alistair is a British cartoon produced for the BBC. The title characters are a girl and her dog who are joined by their friends Birdie and Butterfly. There are 50 five-minute
The Princeton Companion to Mathematics Compared to the concise and factual coverage of mathematics in sources such as Wikipedia and MathWorld, the articles in the "Princeton Companion" are intended to be more reflective and discursive, and to convey the beauty and depth of modern mathematics. Quoting a passage from Bertrand Russell that "Pure Mathematics is the class of all propositions of the form "p" implies "q"", the editor of the "Companion" states that it "is about everything that Russell’s definition leaves out." The core sections of the "Companion" are aimed primarily at readers who are already familiar with mathematics at the undergraduate level. Much of