# Tagged Questions

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### Number of configurations in a constrained nested loops and configuration back from serial

Consider 4 counters looping the digits 0, 1, 2 to form the various "configurations", like in : ...
189 views

### Operation counts for algorithm using Gaussian elimination to find A^(-1)

I need help determining the operation counts of my algorithm that uses Gaussian elimination to find the inverse of a matrix. Can anyone help me? Here is my algorithm: ...
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### One-to-one functions between vectors of integers and integers, with easily computable inverses

I'm trying to find functions that fit certain criteria. I'm not sure if such functions even exist. The function I'm trying to find would take vectors of arbitrary integers for the input and would ...
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### Algorithm for root function $[2^{n-1}]$

I am attempting to convert this function $[2^{n-1}]$ into a root function to return original value. Thus far all my attempts have ended in abject failure. Base : 1 2 3 4 5 6 7 8 9 Result : ...
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### Inverse of symmetric matrix $M = A A^\top$

I have a matrix, generated by the product of a non-square matrix with its own transpose: $$M = A A^\top.$$ I need the inverse of $M$, assuming $\det(M) \neq 0$. Given the nature of the matrix $M$, ...
Possible Duplicate: Inverse of symmetric matrix $M = A A^\top$ I have a matrix, generated by the product of a non-square matrix with its own transpose: ...