It seems nowthat the world of mathematics and physics has enough number types. Although there are kinds of numbers not mentioned in this book, the number types that are commonly used throughout mathematics and science have not needed to change a great deal since the first half of the 20th century.
These observations, however, bring our mathematical balloon ride to its conclusion. We began at ground level and have ascended to where I hope the reader can gaze down upon a view of the rich and mysterious world of numbers.
