There is some disagreement. Some people include zero in the set of natural numbers (like whole numbers), some people don't (like counting numbers).
Yes.
It is the set of natural numbers.
Please clarify what set you are talking about. There are several sets of numbers. Also, "closed under..." should be followed by an operation; "natural" is not an operation.
No - the ONLY natural number which has a reciprocal which is also a natural number is "1". All the other reciprocals of natural numbers will be fractions that are less than 1.
prime or commonOrdinal number
They are also called the counting numbers.
They both exclude fractions and irrational numbers. Natural numbers are a subset of whole numbers (also called integers); Natural numbers are any positive whole number (meaning any whole number 1 or greater). Whole numbers, also called integers, can be zero or negative.
positive integers whole numbersrational numbers
When it is not included in the natural numbers, it is referred to as 'the natural numbers with zero'.
The set of numbers {1, 2, 3, 4, …} is called the Natural Numbers. These numbers could also be called the counting numbers or the cardinal numbers.
"Natural" numbers
No. Positive numbers can be whole numbers but they can also be decimal numbers and fractions. If a value is a whole number, it does not have a fraction or decimal part and it is not negative. Whole numbers are also called natural numbers or counting numbers.
The natural numbers.
All of the natural numbers and zero are called integers.
Yes. Natural numbers are the counting numbers we use. Integers however contains also the negative values. So yes, natural numbers are integers, but the converse is not true though: integers are counting numbers is false.
yes . Those numbers are called Integers .