# Big List Of Topics

 A big list of topics that may or may not form the basis of a book. Or two. Also look up "Folklore in/of Mathematics" This overlaps with the Farrago of Fragments

 Distance to the horizon Orbital velocity Shooting the monkey Barometer Dissect the square Dissect triangle, pentagon, 6-gon Dissect the circle Paper dodecahedron The other paper dodecahedron Fold a pentagon, triangle, 6-gon Construct a pentagon Heavy boots All angles are right Flipping covers A hundred boxes Witches of Salem Maximising product of heap sizes Sum of the Squaws The Knight Returns A+B=C Hats 0 to n-1, someone to be right Perrin Product of chords Counting bounces Pythagoras by incircle Astronaut in a sphere Coins to make hexagon Coins to make straight line Brownian, (0,1) -> (<1,0) prob? Tethered to perimeter, graze half? Sqrt 2 not in Q. n^th root neither Mutilated chessboard Thirteen piles of four. Three integers in a.p. whose product is prime? Integer whose English name is alphabetical? Lifting the rail track Curve versus triangle Infinitely many composites Shoelaces - knot theory sin t + a cos (t+c) is still sin Product of sum of squares still Half integer rectangles Pythagoras generalised Non- crossing Euler. Bi-colour Jordan curves. Complex proof of Pythagoras Unstable quadratics Why is A4 210x297 ? Area by cutout and weigh. Percentage wine in water. Tower of a's Lanchester's laws Rock in boat in swimming pool helium balloon in car Cars across the desert

Initial written versions now exist (not on this web site) of:

 Distance to the Moon Rope around the Earth The other rope around the Earth Infinitely many semi-1 numbers? Hungarian Race Track Von Neumann and the fly The two inch hole Proof via Archimedes Pythagoras by fish tank Stone the crows Flipping ice cream cake Wilson's theorem

To be considered/processed:
 sub-heaps problem arithmetic progression of 3 integers whose product is prime number whose name has letters in alphabetical order example of irrational number to irrational power being rational petrol cans in a circle two armies how to estimate speed of light in seventeenth century complex number to complex power rock in boat in swimming pool helium balloon in car helium balloon on moon (inside moonbase / outside on surface).