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A series can be represented in a compact form, called summation or sigma notation. The Greek capital letter, ? , is used to represent the sum.

This is the sigma symbol: ?. It tells us that we are summing something.

Unpacking the meaning of summation notation This is the sigma symbol: ?. It tells us that we are summing something.

Michael Angier (2005) [26] defines synergy as the phenomenon of two or more people getting along and benefiting one another, i.e., the combination of energies, resources, talents and efforts equal more than the sum of the parts. It is possible to describe this phenomenon by the expression 1 + 1 = 3.

? Sum. The ? symbol means sum. ? is the Greek capital sigma character. It is used commonly in algebraic functions, and you may also notice it in Excel - the AutoSum button has a sigma as its icon.

Sigma symbol is math is a Greek alphabet called "?" and is read as "sigma". It looks like capital E in the English alphabet. The Sigma symbol is also known as the summation symbol. It is used to write the sum of elements of a sequence.

The Greek capital letter, ? , is used to represent the sum. The series 4+8+12+16+20+24 can be expressed as 6?n=14n . The expression is read as the sum of 4n as n goes from 1 to 6 .

We know that the sum of two numbers is the result obtained by adding two numbers. Thus, if {x1,x2,?,xn} { x 1 , x 2 , ? , x n } is a sequence, then the sum of its terms is denoted using the symbol ? (sigma). i.e., the sum of the above sequence = ?ni=1xi=x1+x2+?.xn ? i = 1 n x i = x 1 + x 2 + ? . x n .

The symbol ? indicates summation and is used as a shorthand notation for the sum of terms that follow a pattern. For example, the sum of the first 4 squared integers, 12+22+32+42, follows a simple pattern: each term is of the form i2, and we add up values from i=1 to i=4.

In nuclear and particle physics, ? is used to denote cross sections in general (see also RCS), while ? represents macroscopic cross sections [1/length]. The symbol is to denote the Stefan?Boltzmann constant. In relation to fundamental properties of material, ? is often used to signify electrical conductivity.