Package index • ricci

Label and unlabel tensors

as.array(<tensor>): Strip array labels

as_a(): Strip array labels

tensor() `%_%`: Create a labeled array (tensor)

.(): Index slot label specification

Tensor operations

asym(): Antisymmetric tensor part

kron(): Kronecker product

l(): Lower tensor indices

r(): Raise tensor indices

subst(): Substitute tensor labels

sym(): Symmetric tensor part

Predefined tensors

d(): Kronecker delta

e(): Levi-Civita epsilon

g_eucl(): Euclidean metric tensor

g_mink(): Minkowski metric tensor

Testthat expectation

expect_tensor_equal(): Does code return the expected value?