Set theory

English: Set theory is a branch of Mathematics.
It's regarded the foundation of mathematics, and closely related with logic.


Contents

Operations on and relations between two setsEdit

The Venn diagrams in the left matrix represent set operations - e.g. the intersection Venn0001.svg,
those in the right matrix represent set relations - e.g. the subset relation Relation1011.svg, more usually represented by an Euler diagram: Venn A subset B.svg
The set theoretic descriptions are over the Venn diagrams:

 
c
          
A = A
1111 1111
 
Ac  Bc
true
A ↔ A
 
 B
 
 Bc
AA
 
 
 Bc
1110 0111 1110 0111
 
 Bc
¬A  ¬B
A → ¬B
 
 B
 B
A ← ¬B
 
Ac B
 
A B
A¬B
 
 
A = Bc
A¬B
 
 
A B
1101 0110 1011 1101 0110 1011
 
Bc
 ¬B
A ← B
 
A
 B
A ↔ ¬B
 
Ac
¬A  B
A → B
 
B
 
B =
AB
 
 
A = c
A¬B
 
 
A =
AB
 
 
B = c
1100 0101 1010 0011 1100 0101 1010 0011
¬B
 
 
 Bc
A
 
 
(A  B)c
¬A
 
 
Ac  B
B
 
Bfalse
 
Atrue
 
 
A = B
Afalse
 
Btrue
 
0100 1001 0010 0100 1001 0010
 ¬B
 
 
Ac  Bc
 B
 
 
 B
¬A  B
 
AB
 
1000 0001 1000 0001
¬A  ¬B
 
 
 B
 
 
A = Ac
0000 0000
false
A ↔ ¬A
A¬A
 
These sets or statements have complements
or negations. They are shown inside this matrix.
These relations are statements, and have negations.
They are shown in a seperate matrix in the box below.



SyllogismsEdit

PartitionsEdit

Various filesEdit

 

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