Skip main navigation

Glossary

Glossary

We are planning to prepare a Glossary for the course that contains a list of the key terms that are used in the course.

Which terms would you like us to explain here?

Symbols A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Symbols

(exists) :There exists.

(in): Belongs to

(forall): For every

(mathbb N): The set of natural numbers (0,1,2,3,…)

(mathbb Q): The set of rational numbers.

(mathbb R): The set of real numbers.

(mathbb Z): The set of integer numbers (…,-3,-2,-1,0, 1,2,3,…)

A

B

C

D

E

F

G

H

I

Integer: a number of the set (mathbb Z=lbrace …,-3,-2,-1,0,1,2,3,…rbrace)

J

K

L

M

N

Natural number: a number of the set (mathbb N=lbrace 0,1,2,3,…rbrace)

O

P

Q

R

Rational number: a number of the set (mathbb Q=lbrace …frac ab:, ainmathbb Z, binmathbb Nrbrace)

Real number: an element of (mathbb R). The set (mathbb R) contains the limits of sequences of rational numbers and elements like square roots, (pi, e,…)

S

Square root of (xge 0): the positive number (y) satisfying (y^2=x).

(m-)th square root of (xge 0): the positive number (y) satisfying (y^m=x).

T

U

V

W

X

Y

Z

This article is from the free online

Precalculus: the Mathematics of Numbers, Functions and Equations

Created by
FutureLearn - Learning For Life

Our purpose is to transform access to education.

We offer a diverse selection of courses from leading universities and cultural institutions from around the world. These are delivered one step at a time, and are accessible on mobile, tablet and desktop, so you can fit learning around your life.

We believe learning should be an enjoyable, social experience, so our courses offer the opportunity to discuss what you’re learning with others as you go, helping you make fresh discoveries and form new ideas.
You can unlock new opportunities with unlimited access to hundreds of online short courses for a year by subscribing to our Unlimited package. Build your knowledge with top universities and organisations.

Learn more about how FutureLearn is transforming access to education