Package: einsum
Type: Package
Title: Einstein Summation
Version: 0.2.0
Authors@R: c(
    person("Constantin", "Ahlmann-Eltze", email = "artjom31415@googlemail.com",
               role = c("aut", "cre"), comment = c(ORCID = "0000-0002-3762-068X")),
    person("Koki", "Tsuyuzaki", email = "k.t.the-answer@hotmail.co.jp",
               role = "aut", comment = c(ORCID = "0000-0003-3797-2148"))
    )
Description: The summation notation suggested by Einstein (1916)
        <doi:10.1002/andp.19163540702> 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.
License: MIT + file LICENSE
Encoding: UTF-8
Suggests: testthat, covr
RdMacros: mathjaxr
RoxygenNote: 7.2.3
LinkingTo: Rcpp
Imports: Rcpp, glue, mathjaxr
URL: https://const-ae.github.io/einsum/
BugReports: https://github.com/const-ae/einsum/issues
Repository: https://const-ae.r-universe.dev
Date/Publication: 2026-07-08 21:55:31 UTC
RemoteUrl: https://github.com/const-ae/einsum
RemoteRef: HEAD
RemoteSha: c1e345b02d78269cfdd3f9a7b46e1e5fdc3c56bb
NeedsCompilation: yes
Packaged: 2026-07-08 22:47:56 UTC; root
Author: Constantin Ahlmann-Eltze [aut, cre] (ORCID:
    <https://orcid.org/0000-0002-3762-068X>),
  Koki Tsuyuzaki [aut] (ORCID: <https://orcid.org/0000-0003-3797-2148>)
Maintainer: Constantin Ahlmann-Eltze <artjom31415@googlemail.com>