Natural numbers are actually closed under addition. If you add any two if them, the result will always be another natural number.
No, a set of natural numbers is not a group under the operation of addition. For a set to be a group, it must satisfy four properties: closure, associativity, identity, and inverses. While the natural numbers are closed under addition and associative, there is no additive identity (0 is not included in the natural numbers) and no inverses (there is no natural number that can be added to another natural number to yield zero).
Yes. The entire set of natural numbers is closed under addition (but not subtraction). So are the even numbers (but not the odd numbers), the multiples of 3, of 4, etc.
Yes, when you add any group of natural numbers, the sum will also be a natural number.
Natural (ℕ), integer (ℤ), rational (ℚ), real (ℝ) and complex (ℂ) numbers are all closed under addition.
The two are counts and so natural numbers. The set of natural numbers is closed under addition.
Addition.
The numbers are not closed under addition because whole numbers, even integers, and natural numbers are closed.
Yes. The entire set of natural numbers is closed under addition (but not subtraction). So are the even numbers (but not the odd numbers), the multiples of 3, of 4, etc.
Yes, when you add any group of natural numbers, the sum will also be a natural number.
Natural (ℕ), integer (ℤ), rational (ℚ), real (ℝ) and complex (ℂ) numbers are all closed under addition.
Yes, because naturals are counting numbers, {1,2,3...} and any natural number added by another natural number has to be a natural. Think of a number line, and your adding the natural numbers. The sum has to be natural, so yes it is closed.
The two are counts and so natural numbers. The set of natural numbers is closed under addition.
Yes, closure is a property of natural numbers. In mathematics, a set is said to be closed under an operation if performing that operation on members of the set always produces a member of the same set. For example, the set of natural numbers is closed under addition and multiplication, as the sum or product of any two natural numbers is always a natural number. However, it is not closed under subtraction or division, as these operations can yield results that are not natural numbers.
The set of even numbers is closed under addition, the set of odd numbers is not.
Quite simply, they are closed under addition. No "when".
No, the natural numbers are not closed under division. For example, 2 and 3 are natural numbers, but 2/3 is not.
Addition and multiplication.