mathematics [2]![click to hear](/images/speaker.jpg)
The science that uses deductive reasoning to study the properties of abstract entities such as numbers, space and functions and the relations between them.
factorial ![click to hear](/images/speaker.jpg)
Product of all positive whole numbers less than and equal to a given number. For example, the factorial of 4 is: 4! = 1x2x3x4 = 24.
integral ![click to hear](/images/speaker.jpg)
Result of the integral calculation used especially to determine an area and to resolve a differential equation.
infinity ![click to hear](/images/speaker.jpg)
Symbol denoting that a value has no upper limit.
fraction ![click to hear](/images/speaker.jpg)
Sign denoting that the number on the left of the slash (numerator) is one part of the number on the right of the slash (denominator).
sum ![click to hear](/images/speaker.jpg)
Sign indicating that several values are to be added together (their sum).
square root of ![click to hear](/images/speaker.jpg)
Sign denoting that, when a number is multiplied by itself, the result is the number that appears below the bar.
is not an element of ![click to hear](/images/speaker.jpg)
Binary sign denoting that the element on the left is not included in the set on the right.
is an element of ![click to hear](/images/speaker.jpg)
Binary sign denoting that the element on the left is included in the set on the right.
union of two sets ![click to hear](/images/speaker.jpg)
Binary sign denoting that a set is composed of the sum of the elements of two sets.
intersection of two sets ![click to hear](/images/speaker.jpg)
Binary sign denoting that two sets M and N have elements in common.
is included in/is a subset of ![click to hear](/images/speaker.jpg)
Binary sign denoting that a set A on the left is part of the set B on the right.
percent ![click to hear](/images/speaker.jpg)
Sign denoting that the number preceding it is a fraction of 100.
empty set ![click to hear](/images/speaker.jpg)
Sign denoting that a set contains no elements.