This time we are looking on the **crossword puzzle clue** for: *Sums.*

it’s A 4 letters **crossword definition**.

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## Possible Answers:
**AMOUNTS**.

**AMOUNTS**.

Last seen on: –USA Today Crossword – Oct 13 2020

–USA Today Crossword – Sep 26 2020

The Telegraph – QUICK CROSSWORD NO: 29,405 – Jul 2 2020

### Random information on the term “Sums”:

In mathematics, especially in applications of linear algebra to physics, the Einstein notation or Einstein summation convention is a notational convention that implies summation over a set of indexed terms in a formula, thus achieving notational brevity. As part of mathematics it is a notational subset of Ricci calculus; however, it is often used in applications in physics that do not distinguish between tangent and cotangent spaces. It was introduced to physics by Albert Einstein in 1916.

According to this convention, when an index variable appears twice in a single term and is not otherwise defined (see free and bound variables), it implies summation of that term over all the values of the index. So where the indices can range over the set {1, 2, 3},

is simplified by the convention to:

The upper indices are not exponents but are indices of coordinates, coefficients or basis vectors. That is, in this context x2 should be understood as the second component of x rather than the square of x (this can occasionally lead to ambiguity). The upper index position in xi is because, typically, an index occurs once in an upper (superscript) and once in a lower (subscript) position in a term (see § Application below). Typically, (x1 x2 x3) would be equivalent to the traditional (x y z).