Question

who is known as a kill of tanes and why?
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Answer 1

Explanation:

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Answer 2

Answer:

Statement of convention Edit

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},

{\displaystyle y=\sum _{i=1}^{3}c_{i}x^{i}=c_{1}x^{1}+c_{2}x^{2}+c_{3}x^{3}}{\displaystyle y=\sum _{i=1}^{3}c_{i}x^{i}=c_{1}x^{1}+c_{2}x^{2}+c_{3}x^{3}}

is simplified by the convention to:

{\displaystyle y=c_{i}x^{i}.}{\displaystyle y=c_{i}x^{i}.}

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).

In general relativity, a common conv