by Wells, David
Primrose, E. J. F. 76
problema 86, 88, 225
Proofs and Refutations 117
Propositions to Sharpen the Young 3
Protracted Game, The 45
Pythagoras 150
Pythagoras’ theorem 79, 127, 128, 184, 189, 210
Psychology of Invention…, The 226
Pythagorean Proposition, The 188
radian 58, 99
Ramanujan, Srinivasa 84, 141, 147, 213
Récréations Mathématiques 17
Rényi, Alfréd 228
Rhind papyrus 3
Robertson, Jack 21
Roberval, G. P. De 157, 159
Romanticism 219
Rota, Gian-Carlo 220
Rules of Lasca, The 31
Russell, Bertrand 44, 182
Saunderson, Nicholas 41
Schikard, Wilhelm 152
Schneider, Walter 198
Schultz, Daniel 138–140
Schwarz, Hermann 195
science 60
Segoe, Kensaku 52
Seven-Circle Theorem 129, 204
shape 105–107
Shelah, S. 214
Shoelace Book, The 22
Simon, Herbert 37
Simson's line 90
Singmaster, David 213
skew quadrilateral 193–194
Snell, Willebrod 167
sona 225
Sprague, Roland 38
statue puzzle 5
Stein, E. M. 214
Steiner's porism 203–204
Stewart, Ian 229
string figures 1
Struggle 31
sums of squares 132
Sylvester, James 122–123, 146, 226
Tanaka, M. 136
tangent 102–104
Tartaglia 3
Temperley, H. N. V. 71
theorema 86, 88, 225
Thurston, William 140
Tonietti, Tito 213
topology 2, 11, 16
Toricelli, Evangelista 157
Tower of Hanoi 17–19, 38, 43, 52, 56, 58
triangle geometry 123
Turkle, Sherry 230
TwixT 29
Ulam, Stanislav 197
Voltaire 51
Wallis, John 153
wasan 141, 161, 162
Webb, William 21
Weyl, Hermann 74, 145
Whitehead A. N. 221
Wigner, Eugene 151
Wiles, Andrew 46, 55, 120
Wood, Thomas 77
Wolfe, David 62
Wolfenstein, Martha 222
women and mathematics 229–230
Winning Ways 38
Zeilberger, Doron 146
Zhoubi suanjing 173
