Here are some reading recommendations:

Aliprantis, Charalambos D.  Games and Decision Making.  Oxford University Press.  2000.

Andrews, George E. Number Theory. Dover Publications. 1971.

Appell, Walter. Mathematics for Physics and Physicists. Princeton University Press. 2001.

Atiyah, Michael. The Geometry and Physics of Knots. Cambridge University Press. 1990.

Baez, John and Muniain, Javier P. Gauge Fields, Knots and Gravity. World Scientific. 1994.

Baez, John. Knots and Quantum Gravity. Oxford Science Publications. 1994.

Becker, Katrin.  String Theory and M-Theory:  A Modern Introduction.  Cambridge University Press.  2007.