A function is a rule which assigns to each object in a set A exactly one object in a set B. The set A is called the domain and the set B is called the range. The function is denoted as the letter f.
A set is a collection of well defined and distinct objects, considered as an object in its own right.
An empty set in math is called a null set.
math
[object Object]
a unit set is a set with only one element on it example: write a set with the vowel in the word mom . S= 0. Modern set theory was developed by Georg Cantor and Richard Dedekind in the 1870s.
That would be 9.84 x 10^5 .(There are better ways to write it. But sadly, recent changes in the presentation of this website have eliminated the superscript, and made the display of math all but impossible in several other respects.)
math
Answer is the direct object.
A solid is a 3 dimensional object in terms of math.
write object
The null set is a set which has no members. It is an empty set.