Purchase Solution

# Rings with Unity that Form a Group

Not what you're looking for?

I need to prove the following:
Show that if U is the collection of all units in a ring <R, +, *> with unity, then <U,*> is a group.
A reminder was given to make sure to show that U is closed under multiplication.

##### Solution Summary

Rings with Unity that Form a Group are investigated. The solution is detailed and well presented.

##### Free BrainMass Quizzes

Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.

##### Probability Quiz

Some questions on probability

##### Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts

##### Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

##### Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.