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type: software
license: MIT
title: 'riemtan: Riemannian Metrics for Symmetric Positive Definite Matrices'
version: 0.2.5
doi: 10.32614/CRAN.package.riemtan
abstract: Implements various Riemannian metrics for symmetric positive definite matrices,
  including AIRM (Affine Invariant Riemannian Metric, <https://doi.org/10.1007/s11263-005-3222-z>),
  Log-Euclidean (<https://doi.org/10.1002/mrm.20965>), Euclidean, Log-Cholesky (<https://doi.org/10.1137/18M1221084>),
  and Bures-Wasserstein metrics (<https://doi.org/10.1016/j.exmath.2018.01.002>).
  Provides functions for computing logarithmic and exponential maps, vectorization,
  and statistical operations on the manifold of positive definite matrices.
authors:
- family-names: Escobar
  given-names: Nicolas
  email: nescoba@iu.edu
  orcid: https://orcid.org/0009-0006-0800-5692
repository: https://nicoesve.r-universe.dev
repository-code: https://github.com/nicoesve/riemtan
commit: 1f0276cc0a60b5ceb0856f7655cc3e8ee7803d21
url: https://nicoesve.github.io/riemtan/
date-released: '2025-11-10'
contact:
- family-names: Escobar
  given-names: Nicolas
  email: nescoba@iu.edu
  orcid: https://orcid.org/0009-0006-0800-5692