Old Hollywood: Lewis sensationally revealed in her 1994 memoir that she was conceived in 1935 when Loretta Young, 22, and the married Clark Gable, 34, were shooting The Call of the Wild. Secret: Loretta Young is pictured with Judy Lewis in 1944, who did not know for years who her father was.
The sigma symbol provides the character used to denote the sum of an equation in mathematics. You can create a sigma sign by accessing the Character Palette, using a keyboard shortcut or by using the Special Characters menu in your current application.
A series is the sum you get when you add all of the terms of a sequence. Series: 2 + 4 + 6 + 8 + 10 + 12 + 14 = 56. When writing a series, a shorthand notation is used to represent the sum of a number of terms having a common form. This shorthand notation is referred to as summation notation or sigma notation. The symbol used in the notation, â, is the Greek capital letter sigma. Numbers are substituted into the expression (2i) starting with the first i value of 1 and continuing (counting by ones) until the i value reaches 7.