Tag: series

A series is, informally speaking, the sum of the terms of a sequence. Finite sequences and series have defined first and last terms, whereas infinite sequences and series continue indefinitely.
In mathematics, given an infinite sequence of numbers { an }, a series is informally the result of adding all those terms together: a1 + a2 + a3 + · · ·. These can be written more compactly using the summation symbol ∑. An example is the famous series from Zeno’s dichotomy and its mathematical representation:
The terms of the series are often produced according to a certain rule, such as by a formula, or by an algorithm. As there are an infinite number of terms, this notion is often called an infinite series. Unlike finite summations, infinite series need tools from mathematical analysis, and specifically the notion of limits, to be fully understood and manipulated. In addition to their ubiquity in mathematics, infinite series are also widely used in other quantitative disciplines such as…

MSI Wind U160 & U135

Since its unveiling in 2008, the MSI Wind U series, which is characterized by superior quality, beautiful exteriors, and ideal…

ThinkStation E20, new from Lenovo

Lenovo (HKSE:992) (ADR:LNVGY)today announced the ThinkStation E20, the first in a new series of entry level workstations. Starting under $6001…