Xer in Math

[Bucky]

What does XER mean in maths? and are all positive and negative numbers ?

All replies will be appreciated.

 

[medstudent]

x∈R means x is an element of R where x belongs to a real set of numbers and R means "the Real set of numbers"

 

[Zain]

Xer or in maths means that is a real number belonging to a Real set of numbers (R). The real numbers basically consists of all numbers both positive and negative. Integers, zero, rational numbers and a range of other numbers can also be included. So basically, X ∈ R means is an element of R.

 

[LinkTainted]

the “e” looking symbol means “in”. the statement in your title means “x in R”. that’s literally it.

The xer statement precisely means x in R. x is an element in R

 

[Canucksfan]

All of the replies are true.

I just simplify it as “ x exists in R “, R being the Real set of numbers.

 

[Bucky]

Thanks guys!!