clifford

Arbitrary Dimensional Clifford Algebras

v1.1-3 · Nov 10, 2025 · GPL (>= 2)

Description

A suite of routines for Clifford algebras, using the 'Map' class of the Standard Template Library. Canonical reference: Hestenes (1987, ISBN 90-277-1673-0, "Clifford algebra to geometric calculus"). Special cases including Lorentz transforms, quaternion multiplication, and Grassmann algebra, are discussed. Vignettes presenting conformal geometric algebra, quaternions and split quaternions, dual numbers, and Lorentz transforms are included. The package follows 'disordR' discipline.

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CRAN Check Status

2 NOTE

12 OK

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Flavor	Status	Time
r-devel-linux-x86_64-debian-clang	NOTE	198.1s
r-devel-linux-x86_64-debian-gcc	NOTE	139.2s
r-devel-linux-x86_64-fedora-clang	OK	300.5s
r-devel-linux-x86_64-fedora-gcc	OK	316.8s
r-devel-macos-arm64	OK	49s
r-devel-windows-x86_64	OK	233s
r-oldrel-macos-arm64	OK
r-oldrel-macos-x86_64	OK	329s
r-oldrel-windows-x86_64	OK	300s
r-patched-linux-x86_64	OK	187.1s
r-release-linux-x86_64	OK	186.7s
r-release-macos-arm64	OK
r-release-macos-x86_64	OK	261s
r-release-windows-x86_64	OK	238s

Check details (2 non-OK)

NOTE r-devel-linux-x86_64-debian-clang

CRAN incoming feasibility

Maintainer: ‘Robin K. S. Hankin <hankin.robin@gmail.com>’

Found the following (possibly) invalid file URI:
  URI: 1206.3683
    From: inst/doc/clifford.pdf

NOTE r-devel-linux-x86_64-debian-gcc

CRAN incoming feasibility

Maintainer: ‘Robin K. S. Hankin <hankin.robin@gmail.com>’

Found the following (possibly) invalid file URI:
  URI: 1206.3683
    From: inst/doc/clifford.pdf

Check History

NOTE 12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

NOTE r-devel-linux-x86_64-debian-clang

CRAN incoming feasibility

Maintainer: ‘Robin K. S. Hankin <hankin.robin@gmail.com>’

Found the following (possibly) invalid file URI:
  URI: 1206.3683
    From: inst/doc/clifford.pdf

NOTE r-devel-linux-x86_64-debian-gcc

CRAN incoming feasibility

Maintainer: ‘Robin K. S. Hankin <hankin.robin@gmail.com>’

Found the following (possibly) invalid file URI:
  URI: 1206.3683
    From: inst/doc/clifford.pdf

Dependency Network

Version History

new 1.1-3 Mar 10, 2026

updated 1.1-3 ← 1.1-2 diff Nov 9, 2025

updated 1.1-2 ← 1.1-1 diff Oct 19, 2025

updated 1.1-1 ← 1.1-0 diff May 6, 2025

updated 1.1-0 ← 1.0-8 diff Apr 30, 2025

updated 1.0-8 ← 1.0-7 diff Aug 13, 2022

updated 1.0-7 ← 1.0-5 diff May 1, 2022

updated 1.0-5 ← 1.0-2 diff Nov 17, 2021

updated 1.0-2 ← 1.0-1 diff Mar 7, 2020

new 1.0-1 Jan 29, 2020