- #1
jeff1evesque
- 312
- 0
Group properties:
1. [tex]\forall a, b, c \in G,
(a * b) * c = a * (b * c).[/tex] (associativity)
2. [tex]\exists e \in G[/tex] such that [tex]\forall x \in G,
e * x = x * e = x.[/tex] (identity)
3. [tex]\forall a \in G, \exists a' \in G[/tex] such that, [tex]
a * a' = a' * a = e[/tex] (inverse)
Instruction:
Determine whether the binary operation [tex]*[/tex] gives a group structure on the given set.
Problem:
Let [tex]*[/tex] be defined on Q by letting [tex]a * b = ab[/tex].
Thought process:
To begin, one has to understand the three properties of being a group- which is defined above. Can someone help me go through the process of testing the three properties from above to our specified problem?
Thanks,
JL
1. [tex]\forall a, b, c \in G,
(a * b) * c = a * (b * c).[/tex] (associativity)
2. [tex]\exists e \in G[/tex] such that [tex]\forall x \in G,
e * x = x * e = x.[/tex] (identity)
3. [tex]\forall a \in G, \exists a' \in G[/tex] such that, [tex]
a * a' = a' * a = e[/tex] (inverse)
Instruction:
Determine whether the binary operation [tex]*[/tex] gives a group structure on the given set.
Problem:
Let [tex]*[/tex] be defined on Q by letting [tex]a * b = ab[/tex].
Thought process:
To begin, one has to understand the three properties of being a group- which is defined above. Can someone help me go through the process of testing the three properties from above to our specified problem?
Thanks,
JL
Last edited: