Subsets and sets symbol explenation (Very simple question please have a look)

In summary, the symbol for a subset is ⊆ (a line under a sideways U). The subset symbol is read as "is a subset of" or "is contained in". A subset is a collection of elements that are all contained within a larger set, while a set can contain any type of element and is not limited to just being a collection of other sets. A set can also be a subset of itself, as all of its elements are contained within the set. The subset relationship is denoted by the symbol ⊆ (a line under a sideways U) in mathematical notation.
  • #1
astrozilla
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0

Homework Statement


Hi
I would like you please to look my attachement ,and explain to me the meaning of the line above M and N what's the meaning of this line?It seems to me that it acts as we should take the complementary collection of numbers .


Homework Equations





The Attempt at a Solution

 

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  • #2
Yes, you are probably right. The notation [itex]\overline{N}[/itex] just means all the elements which are not in N.
 

FAQ: Subsets and sets symbol explenation (Very simple question please have a look)

What is the symbol for a subset?

The symbol for a subset is ⊆ (a line under a sideways U).

How do I read the subset symbol?

The subset symbol is read as "is a subset of" or "is contained in".

What is the difference between a subset and a set?

A subset is a collection of elements that are all contained within a larger set. A set, on the other hand, can contain any type of element and is not limited to just being a collection of other sets.

Can a set be a subset of itself?

Yes, a set can be a subset of itself. This is because a set is always considered to be a subset of itself, as all of its elements are contained within the set.

How is the subset relationship denoted in mathematical notation?

The subset relationship is denoted by the symbol ⊆ (a line under a sideways U) in mathematical notation.

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