What does this vertical line mean after X?

3 replies · 3K views · last reply
Natalie1
Messages
7
Reaction score
0
Attachments
  • Y = {X | X ∉ X}, the set of all X such that X is not an element of X, written in set-builder notation.
    dicrete.JPG
    1.6 KB · Views: 175

Discussion

Hi Natalie! Welcome to MHB! (Smile)

The vertical line means: "for which holds that".
So it reads as: the set of all X for which holds that X is not an element of itself.

It's part of the set-builder-notation.
 
While equivalent to what I like Serena posted, I was taught (in the context of set builder notation) it means "such that." :)
 

Similar threads

Undergrad What does the vertical line in this equation mean?
  • APUGYael
  • · Replies 4 ·
  • General Math
Replies
4
Undergrad What Could a Steeper Best Fit Line Than Maximum Line Mean in Graph Analysis?
  • CrzCz
  • · Replies 4 ·
  • Set Theory, Logic, Probability, Statistics
Replies
4
Undergrad What does the vertical bar symbol mean in set-builder notation?
  • Square1
  • · Replies 3 ·
  • Set Theory, Logic, Probability, Statistics
Replies
3
High School Why does a vertical asymptote at x=1 make the area seem infinite?
  • songoku
  • · Replies 11 ·
  • Calculus
Replies
11
What does a vertical line through two semicircles mean?
  • mhgl
  • · Replies 13 ·
  • General Discussion
Replies
13
Undergrad Is a Vertical Line the Correct Depiction for this Equation?
  • NATE MATE
  • · Replies 13 ·
  • General Math
Replies
13
Fortran What does this Fortran Line Mean?
  • ecastro
  • · Replies 12 ·
  • AI and Computer Science
Replies
12
Undergrad What does normalizing a straight line mean?
  • Sayed
  • · Replies 2 ·
  • Calculus
Replies
2
Undergrad Why does the equation y(x−1)=x²−1 produce a vertical line at x=1?
  • Ned Eterminita
  • · Replies 37 ·
  • General Math
2
Replies
37
What Does the Vertical Line in a Partial Differential Equation Indicate?
  • Firepanda
  • · Replies 1 ·
  • Calculus and Beyond Homework Help
Replies
1