The Hitchhiker's Guide to the Galaxy a human-like alien writer for the eccentric, electronic travel guide "The Hitchhiker's Guide to the Galaxy", by hitchhiking onto a passing Vogon spacecraft. Following his rescue, Dent explores the galaxy with Prefect and encounters Trillian, another human who had been taken from Earth prior to its destruction by the President of the Galaxy, the two-headed Zaphod Beeblebrox, and the depressed Marvin, the Paranoid Android. Certain narrative details were changed between the various adaptations. The various versions follow the same basic plot but they are in many places mutually contradictory, as Adams rewrote the story substantially for each new adaptation. Throughout
Phrases from The Hitchhiker's Guide to the Galaxy Riemann surface with a maximal number of symmetries and as a symmetry of Hyperbolic tiling made up of combinations of triangles with angle angles π/2, π/3, and π/7 . Rumours that mathematicians are grey mice have been disproved, however. The 42 Puzzle is a game devised by Douglas Adams in 1994 for the United States series of "The Hitchhiker's Guide to the Galaxy" books. The puzzle is an illustration consisting of 42 multi-coloured balls, in 7 columns and 6 rows. Douglas Adams has said, In the puzzle the question is unknown, but the answer is already known to be 42.