List questions from index-notation | MathQA

Declaring a variable to be any element of a given set

Published on 26 Dec 2022 - 20:01

Notation for multi-sigma sum where index-values are never equal

Published on 27 Dec 2022 - 4:33

Question on matrix over matrix derivation

Published on 28 Dec 2022 - 3:24

How would one differentiate Einstein summation and matrix entry notation?

Published on 02 Jan 2023 - 18:41

Is $\int_{-\infty}^\infty \sum_{g(x)=a}\frac{f(a)}{|g’(x)|} da=\left(\frac1{|g’(a_1)|}+\dots+\frac1{|g’(a_j)|}\right)\int_{-\infty}^\infty f(a)da$?

Published on 15 Jan 2023 - 3:27

Could you help me with this problem on natural numbers?

Published on 17 Jan 2023 - 15:55

How to prove this equality using Einstein summation (index notation)

Published on 18 Jan 2023 - 22:31

Understanding the relationship between the covariant and contravarient basis in Euclidean space using traditional matricies

Published on 27 Jan 2023 - 4:28