Mathematics

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Khan Academy

Pauls Online Math Notes

Pauls Online Math Notes Here is a complete listing of all the subjects that are currently available on this site as well as brief descriptions of each. Cheat Sheets & Tables Algebra Cheat Sheet - This is as many common algebra facts, properties, formulas, and functions that I could think of. There is also a page of common algebra errors included.
This book is an introduction to the standard methods of proving mathematical theorems. It has been approved by the American Institute of Mathematics' Open Textbook Initiative. Also see the Mathematical Association of America Math DL review (of the 1st edition), and the Amazon reviews. Hammack Home

Hammack Home

Mathematical Atlas: A gateway to Mathematics

Mathematical Atlas: A gateway to Mathematics

Welcome! This is a collection of short articles designed to provide an introduction to the areas of modern mathematics and pointers to further information, as well as answers to some common (or not!) questions. The material is arranged in a hierarchy of disciplines, each with its own index page ("blue pages"). To reach the best page for your interests, use whichever of these navigation tools ("purple pages") you prefer:
integralCALC

Unsolved Problems

There are many unsolved problems in mathematics. Some prominent outstanding unsolved problems (as well as some which are not necessarily so well known) include 1. The Goldbach conjecture. 2. Unsolved Problems
Do you have hardwood, ceramic tile, travertine tiles, polished concrete or marble in your home? One way to spruce up these area are with the addition of a wool area rug. Sweaters, scarfs and other types of clothing usually come to mind when you think about wool. Prime Time - Mathematicians have tried in vain to this day to discover some oreder inthe sequence of prime numbers... Prime Time - Mathematicians have tried in vain to this day to discover some oreder inthe sequence of prime numbers...
6174 (number)

6174 (number)

6174 is known as Kaprekar's constant[1][2][3] after the Indian mathematician D. R. Kaprekar. This number is notable for the following property: Take any four-digit number, using at least two different digits. (Leading zeros are allowed.)Arrange the digits in ascending and then in descending order to get two four-digit numbers, adding leading zeros if necessary.Subtract the smaller number from the bigger number.Go back to step 2.
Fibonacci in Nature

Fibonacci in Nature

The Fibonacci numbers play a significant role in nature and in art and architecture. We will first use the rectangle to lead us to some interesting applications in these areas. We will construct a set of rectangles using the Fibonacci numbers 1, 1, 2, 3, 5, 8, 13, 21, and 34 which will lead us to a design found in nature.