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/usr/share/yacas/scripts/linalg.rep/code.ys.def is in yacas 1.3.6-2.

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LeviCivita
Permutations
InProduct
CrossProduct
Outer
o
ZeroVector
BaseVector
Identity
DiagonalMatrix
Normalize
ZeroMatrix
Transpose
Determinant
SymbolicDeterminant
CoFactor
Minor
Inverse
Trace
Tr
X
.
SylvesterMatrix
VandermondeMatrix
MatrixRow
MatrixColumn
GenMatrix
RandomIntegerVector
RandomIntegerMatrix
JacobianMatrix
HessianMatrix
WronskianMatrix
HilbertMatrix
HilbertInverseMatrix
HankelMatrix
ToeplitzMatrix
FrobeniusNorm
PNorm
Norm
OrthogonalBasis
OrthonormalBasis
Dimensions
Dot
MatrixPower
Diagonal
Sparsity
MatrixSolve
Cholesky
LU
}