Using Fibonacci Numbers to Convert from Miles to Kilometers and Vice Versa. I learned an interesting fact about Fibonacci numbers recently while watching a lecture on number theory.
Fibonacci numbers can be used to approximately convert from miles to kilometers and back. Here is how. Wolfram MathWorld: The Web's Most Extensive Mathematics Resource. List of mathematical symbols. When reading the list, it is important to recognize that a mathematical concept is independent of the symbol chosen to represent it.
For many of the symbols below, the symbol is usually synonymous with the corresponding concept (ultimately an arbitrary choice made as a result of the cumulative history of mathematics), but in some situations a different convention may be used. For example, depending on context, the triple bar "≡" may represent congruence or a definition. Further, in mathematical logic, numerical equality is sometimes represented by "≡" instead of "=", with the latter representing equality of well-formed formulas. Journey into Cryptography.
Trigonometry. Geometry. Algebra.