Introduction into the
Symmetry of Molecules

Step 168

Preface (german) Table of Content Remarks Imprint

The real numbers form a group concerning the normal addition as linkage.
Consider: The group, multiplication " is with this example the addition of the numbers, group "product " is the sum.
We check the four conditions:
1. For two real numbers a and b a unique realnumber c is defined by c=a b.
2. It applies the associative law: .................
3. The zero represent the one element, because .............
4. To each a an inverse item exists - to a, because .................

Go now to step 170 !

Introduction into the Symmetry of Molecules

Step 168

Introduction into the
Symmetry of Molecules