Statistics II Essentials

Set Theory and Logic

Topology Essentials

Problems And Solutions In Mathematical Olympiad (Secondary 1)

Naive Set Theory

A Concise Introduction to Pure Mathematics: Edition 4

Universal Algebra: Fundamentals and Selected Topics

Elements of Set Theory

Axiomatic Set Theory

A Beginner's Further Guide To Mathematical Logic

The Incompleteness Phenomenon

Pythagorean Fuzzy Sets: Theory and Applications

The Ecology, Exploitation and Conservation of River Turtles

The Art of Proving Binomial Identities

Journey to the Edge of Reason: The Life of Kurt Gödel