Summation is the addition
of a set of numbers; the result is their sum or total. An interim or present total of a summation process is
termed the running total. The "numbers" to be summed may be natural numbers, complex numbers, matrices, or still
more complicated objects. An infinite sum is a subtle procedure known as a series. Note that the term summation
has a special meaning in the context of divergent series related to extrapolation.
- Wikipedia

Summations are often used in the process of reducing
complex equations in to smaller factors that can be more easily manipulated for operations in calculus and other
mathematical methods.

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while typing up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.