1.   I started to find great relaxation in playing with mathematical problems and puzzles.

2.   In a similar way it is possible to phrase many other unsolved mathematical problems in terms of the Turing machine halting problem.

3.   It was a thriving concern when I took over, so it was a mathematical problem, really.

4.   They spend so much time thinking about mathematical problems that they do not notice what is happening around them.

5.   With mathematical problems, you can save time by approximating.

6.   At MIT, Charney at first wanted him to work on a highly technical mathematical problem.

7.   Algorithms are step-by- step procedures for solving mathematical problems.

8.   But for creative and elegant solutions to hard mathematical problems, nothing has been able to beat the human mind.

9.   He spoke of a Great Book in the sky, maintained by God, that contained the most elegant proofs of every mathematical problem.

10.   He wanted to translate a mathematical problem into the language of biology and then exploit the incredible efficiency and speed of biological reactions to solve it.