G. Strang

activity

19932023

most citedA Neural Network Solves, Explains, and Generates University Math Problems by Program Synthesis and Few-Shot Learning at Human Level

190 citations · 210 across the 8 of their papers we have counts for

collaborators

Showing 2023Show all

2 papers · 1 filter

math.NA2023

The Pseudoinverse of $A = C R$ is $A^{+} = R^{+} C^{+}$ (?)

Michał P. Karpowicz, Gilbert Strang

This paper gives three formulas for the pseudoinverse of a matrix product $A = C R$ . The first is sometimes correct, the second is always correct, and the third is almost never corr…

math.NA2023

Elimination and Factorization

Gilbert Strang

If a matrix $A$ has rank $r$ , then its row echelon form (from elimination) contains the identity matrix in its first $r$ independent columns. How do we \emph{interpret the matrix}…

The Pseudoinverse of A=CR is A+=R+C+ (?)

Elimination and Factorization

The Pseudoinverse of $A = C R$ is $A^{+} = R^{+} C^{+}$ (?)