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No. The empty set has no proper subset. In the case of infinite sets, complications might arise (I am not quite sure about this).

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14y ago
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9y ago

Yes. Itself.

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Q: Does every set have at least one proper set?
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Is null set proper subset of every set?

First of all, the null set( denoted by is a subset of every set. But it being a proper set or improper set is debatable. Many mathematicians regard it as an improper set, and rightly have as when we say a set is a subset of another, the super set always contains at least one element. For eg,. Let A be the set, in roster form we take it as: A = {ϕ}, we clearly see n(A)=1 then P(A) = {ϕ,{ϕ}} We observe that at least a set must have 1 element for it to have a proper set, but if we take A = ϕ ( i.e. n(A)=0), then clearly ϕ and A itself are improper sets of A and. Hence the minimum amount of proper sets a set has is nil and improper is 2. But I have seen a few high school text books who regard null set as a proper set, which is totally false, arguable by mathematicians, clearly signifying the lethargy of authors of the book failing to update their error driven books. I assure you, that null set is an improper set of every set.


What is the definition of proper subset?

A set S is a proper subset of a set T if each element of S is also in T and there is at least one element in T that is not in S.


Why empty set is proper subset of every set?

It isn't. The empty set is a subset - but not a proper subset - of the empty set.


Does every set have a proper subset?

No. The null set cannot have a proper subset. For any other set, the null set will be a proper subset. There will also be other proper subsets.


When a set is said to be proper?

A set is not, in itself, proper. However, it is a proper subset of another set ifevery element in the first set is an element of the second set, andthere is at least one element in the second set which is not in the first.In other words, all of the first set is included in the second but is not equal to the second.


What is an example of a proper subset?

Let A be the set {1,2,3,4} B is {1,2} and B is a proper subset of A C is {1} and C is also a proper subset of A. B and C are proper subsets of the set A because they are strictly contained in A. necessarily excludes at least one member of A. The set A is NOT a proper subset of itself.


What is the proper subset?

The set X is a proper subset of Y if Xcontains none or more elements from Y and there is at least one element of Y that is not in X.


What is a proper set?

There is no such concept as "proper set". Perhaps you mean "proper subset"; a set "A" is a "proper subset" of another set "B" if:It is a subset (every element of set A is also in set B)The sets are not equal, i.e., there are elements of set B that are not elements of set A.


Proof is null set proper subset of every set?

It's an axiom.


Can any set be a proper set of itself?

NO- by definition a set is not a proper subset of itself . ( It is a subset, but not a proper one. )


What is subsets and proper subsets?

A set "A" is said to be a subset of "B" if all elements of set "A" are also elements of set "B".Set "A" is said to be a proper subset of set "B" if: * A is a subset of B, and * A is not identical to B In other words, set "B" would have at least one element that is not an element of set "A". Examples: {1, 2} is a subset of {1, 2}. It is not a proper subset. {1, 3} is a subset of {1, 2, 3}. It is also a proper subset.


Which set possesses only one proper subset?

A set with only one element in it. The only proper subset of such a set is the null set.