# Rank 1 Update for LU factors

**URL:** <https://discourse.julialang.org/t/rank-1-update-for-lu-factors/93298>\
**Category:** Numerics\
**Created:** [January 21, 2023, 8:08am UTC](https://discourse.julialang.org/t/rank-1-update-for-lu-factors/93298 "2023-01-21T08:08:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![maxchendt](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/maxchendt/32/42976_2.png) [@maxchendt](https://discourse.julialang.org/u/maxchendt)\
**Post date:** [January 21, 2023, 8:08am UTC](https://discourse.julialang.org/t/rank-1-update-for-lu-factors/93298/1 "2023-01-21T08:08:56Z")

</div>

Is there a Julia implementation? as that from the MATLAB Central File Exchange:

> **[Rank 1 Update for LU factors](https://www.mathworks.com/matlabcentral/fileexchange/100436-rank-1-update-for-lu-factors)**
>
> % This function updates the LU factorization (PA = LU) of a Matrix A following a rank % one update of the matrix A = A + alpha\*y\*z'