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identity theft
(lemmy.dbzer0.com)
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this post was submitted on 15 Mar 2025
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Could one of you scholars please explain the joke for us smoothbrains who don't get it? All I see is a boolean matrix, and I'm not even sure that is correct.
You multiply vectors and matrizes row by column.
So for any matrix the fitting identity matrix multiplies each row on the relevant position by one and puts it into a column.
The matrix remains the same.
See example 5 here: https://www.geeksforgeeks.org/identity-matrix/
Eigen see how this is confusing, I don't get it either
A square matrix with the ones in the diagonal is called the identity matrix
It's an identity matrix. You multiple a vector with it and the result is still the same (identical) vector
It's like if you multiply or divide by one. Just a bit bigger cuz linear algebra.