When the tags are there, but no content has been entered.
A null or empty set is a set that does not contain any elements.
The empty set is a set that has no elements.
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"?" is the sign of Empty SetThe empty set is the set containing no elements.In mathematical terms, and more specifically set theory, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) iszero.
An 'Empty Set' or a 'Nul Set'.
null set or empty set, is a set with no elements.
The empty set is the set that contains no elements. (It is the empty set, not an empty set, because there is only one of them. It is a unique mathematical object.)
An empty set becomes an empty set by virtue of its definition which states that it is a set that contains no elements. In other words, it contains nothing, it is empty!
The terms are usually used to describe sets that contain no elements or empty sets.
Container Elements:HTML container elements require a starting as well as an ending tag.For eg: , , Empty Element: HTML empty elements require just a starting tag and not an ending tag.For eg: ,,
An empty set is a set with no elements. It can be symbolized by {} or ø. The solution set for an equation that has no solution is also called an empty set.
It is a set that contains no elements: an empty set.