Portal:Sets for Mathematics (Book)

The textbook Basic Mathematics by Serge Lang provides an overview of mathematical topics usually encountered through the end of high school/secondary school, specifically arithmetic, algebra, trigonometry, logic, and geometry. It serves as a solid review no matter how far along one may be in their studies, be it just beginning or returning to strengthen one's foundations.

Reading the Foreword and the Interlude is recommended for those unfamiliar with reading math texts.