A Cp-theory problem book topological and function spaces 由 Tkachuk, V. V. (Vladimir Vladimirovich)

Available for University of the Philippines Diliman via SpringerLink. Click here to access

A sequence of problems on semigroups 由 Neuberger, J. W. (John W.) 1934-

Available for University of the Philippines Diliman via SpringerLink. Click here to access

The IMO compendium a collection of problems suggested for the International Mathematical Olympiads,1959-2009 由 Djukic, Dusan

Available for University of the Philippines Diliman via SpringerLink. Click here to access

Theory of stochastic processes with applications to financial mathematics and risk theory

Unsolved problems in number theory 由 Guy, Richard K.

Winning solutions. 由 Lozansky, Edward

Theorems and counterexamples in mathematics 由 Gelbaum, Bernard R.

An outline of set theory 由 Henle, James M.

Problem-solving through problems 由 Larson, Loren C. 1937-