Einstein Summation

The summation notation suggested by Einstein (1916) is a concise mathematical notation that implicitly sums over repeated indices of n-dimensional arrays. Many ordinary matrix operations (e.g. transpose, matrix multiplication, scalar product, 'diag()', trace etc.) can be written using Einstein notation. The notation is particularly convenient for expressing operations on arrays with more than two dimensions because the respective operators ('tensor products') might not have a standardized name.


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install.packages("einsum")

0.1.0 by Constantin Ahlmann-Eltze, 4 months ago


Browse source code at https://github.com/cran/einsum


Authors: Constantin Ahlmann-Eltze [aut, cre]


Documentation:   PDF Manual  


MIT + file LICENSE license


Imports Rcpp, glue, mathjaxr

Suggests testthat, covr

Linking to Rcpp

System requirements: C++11


Imported by gcTensor.


See at CRAN