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Aldrein
Last Activity:
Aug 11, 2014
Joined:
Oct 14, 2013
Messages:
22
Trophy Points:
0
Gender:
Male
Birthday:
Jan 9, 1991 (Age: 23)
Occupation:
Lazy student

Aldrein

Male, 23

Aldrein was last seen:
Aug 11, 2014
    1. There are no messages on Aldrein's profile yet.
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  • About

    Gender:
    Male
    Birthday:
    Jan 9, 1991 (Age: 23)
    Occupation:
    Lazy student
    Real Name:
    I do not have a real name. I live in a complex world, not a real one.
    Favorite Pokémon:
    Golduck.
    My Characteristic:
    Somewhat of a clown
    Let X be a set and let τ be a family of subsets of X. Then τ is called a topology on X if:

    1. Both the empty set and X are elements of τ
    2. Any union of elements of τ is an element of τ
    3. Any intersection of finitely many elements of τ is an element of τ
    If τ is a topology on X, then the pair (X, τ) is called a topological space. The notation may be used to denote a set X endowed with the particular topology τ.

    The members of τ are called open sets in X. A subset of X is said to be closed if its complement is in τ (i.e., its complement is open). A subset of X may be open, closed, both, or neither. The empty set and X itself are always both closed and open.
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