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The study of discrete mathematical structures. Consider using a more specific tag instead, such as: (combinatorics), (graph-theory), (computer-science), (probability), (elementary-set-theory), (induction), (recurrence-relations), etc.

Discrete mathematics is not the name of a branch of mathematics, like number theory, algebra, calculus, etc. Rather, it's a description of a set of branches of math that all have in common the feature that they are "discrete" rather than "continuous".

The term "discrete mathematics" is therefore used in contrast with "continuous mathematics," which is the branch of mathematics dealing with objects that can vary smoothly (and which includes, for example, calculus). Whereas discrete objects can often be characterized by integers, continuous objects require real numbers.

Though there cannot be a definite number of branches of Discrete Mathematics, the following topics are almost always covered in any study regarding this matter −

• Sets, Relations and Functions
• Mathematical Logic
• Group theory
• Counting Theory
• Probability
• Mathematical Induction and Recurrence Relations
• Graph Theory
• Trees
• Boolean Algebra

For an overview, see the Wikipedia entry on Discrete mathematics.

Consider using a more specific tag instead, such as: , , , , , , , , etc.