# What Is Discrete Math? | Khan Academy Blog

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## What is discrete arithmetic?

Discrete mathematics is a branch of arithmetic that focuses on the study of countable, distinct objects. It is typically employed in fields this kind of as laptop science, figures, engineering, and cryptography.

## What is discreteness?

A person key thought in discrete arithmetic is the concept of “discreteness.” In arithmetic, a established is said to be discrete if there is a specified volume of separation involving its components. For illustration, the established of integers is discrete mainly because there is a very clear, definable gap in between each range. On the other hand, the established of actual numbers is not discrete mainly because there is no smallest amount of money of separation amongst two genuine numbers.

Discrete arithmetic encompasses a large assortment of subjects. Below are a couple of critical regions that you could possibly face:

## What is combinatorics?

This spot of discrete mathematics focuses on the research of combinations and permutations. It frequently specials with issues this sort of as: How many approaches can you set up the letters in a word? How a lot of distinctive subsets can you make from a supplied established?

## What is graph concept?

Graph theory is the examine of connections concerning objects. In graph principle, you stand for the objects as “nodes” or “vertices” and the connections in between them as “edges.” Graph theory can be utilised to examine social networks, transportation networks, and even laptop algorithms.

## What is number concept?

Variety theory is the research of the houses of all-natural numbers. It focuses on topics such as divisibility, key quantities, and modular arithmetic. Amount idea is frequently made use of in cryptography to generate secure encryption approaches.

## What is logic?

Logic is the research of the concepts of reasoning. In discrete mathematics, you often encounter symbolic logic, which employs symbols to stand for sensible statements. This kind of logic can be utilized to make formal proofs, assess algorithms, and make laptop plans.

Discrete arithmetic is a intriguing and broad industry of research. If you are interested in computer science, studies, engineering, or cryptography, knowing discrete mathematics will be crucial to your success.

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