{
  "_id": "6ad9cad2c230b829876fdf46",
  "Package": "freegroup",
  "Type": "Package",
  "Title": "The Free Group",
  "Version": "1.2-2",
  "Authors@R": "c(person(c(\"Robin\", \"K. S. \"), \"Hankin\", \nrole=c(\"aut\",\"cre\"),\nemail=\"hankin.robin@gmail.com\",\ncomment = c(ORCID = \"0000-0001-5982-0415\")))",
  "Maintainer": "Robin K. S. Hankin <hankin.robin@gmail.com>",
  "Description": "The free group in R; juxtaposition is represented by a\nplus.  Includes inversion, multiplication by a scalar,\ngroup-theoretic power operation, and Tietze forms.  To cite the\npackage in publications please use Hankin (2022)\n<doi:10.48550/ARXIV.2212.05883>.",
  "LazyData": "yes",
  "VignetteBuilder": "knitr",
  "License": "GPL-2",
  "URL": "https://github.com/RobinHankin/freegroup,\nhttps://robinhankin.github.io/freegroup/",
  "BugReports": "https://github.com/RobinHankin/freegroup/issues",
  "RoxygenNote": "7.3.3",
  "Encoding": "UTF-8",
  "Config/pak/sysreqs": "libgmp3-dev",
  "Repository": "https://robinhankin.r-universe.dev",
  "Date/Publication": "2026-08-23 08:34:46 UTC",
  "RemoteUrl": "https://github.com/robinhankin/freegroup",
  "RemoteRef": "HEAD",
  "RemoteSha": "58c8bcc4de086907d61930765be59a6fe4c5015c",
  "NeedsCompilation": "no",
  "Packaged": {
    "Date": "2026-10-22 08:31:35 UTC",
    "User": "root"
  },
  "Author": "Robin K. S. Hankin [aut, cre] (ORCID:\n<https://orcid.org/0000-0001-5982-0415>)",
  "_user": "robinhankin",
  "_type": "src",
  "_file": "freegroup_1.2-2.tar.gz",
  "_fileid": "https://r2.ropensci.org/89e0a8ee53f0593a1a62f644387afe46a7a68a95991286423f99ea38db880b4c",
  "_filesize": 769329,
  "_sha256": "89e0a8ee53f0593a1a62f644387afe46a7a68a95991286423f99ea38db880b4c",
  "_expires": "2027-01-30T08:35:28.000Z",
  "_created": "2026-10-22T08:31:35.000Z",
  "_published": "2026-10-22T08:35:29.960Z",
  "_upstream": "https://github.com/robinhankin/freegroup",
  "_status": "success",
  "_maintainer": {
    "name": "Robin K. S. Hankin",
    "email": "hankin.robin@gmail.com",
    "login": "robinhankin",
    "orcid": "0000-0001-5982-0415",
    "description": "pushing the boundaries of R in non-statistical contexts",
    "uuid": 13262034
  },
  "_jobs": [
    {
      "job": 119722627721,
      "time": 190,
      "config": "linux-devel-x86_64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "12412092926"
    },
    {
      "job": 119722627801,
      "time": 137,
      "config": "linux-release-x86_64",
      "r": "4.6.1",
      "check": "OK",
      "artifact": "12411838801"
    },
    {
      "job": 119722627785,
      "time": 122,
      "config": "macos-oldrel-arm64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "12412317731"
    },
    {
      "job": 119722627723,
      "time": 134,
      "config": "macos-release-arm64",
      "r": "4.6.1",
      "check": "OK",
      "artifact": "12412931188"
    },
    {
      "job": 119719941605,
      "time": 386,
      "config": "source",
      "r": "4.6.1",
      "check": "OK",
      "artifact": "12412571478"
    },
    {
      "job": 119722627809,
      "time": 99,
      "config": "wasm-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "12412417411"
    },
    {
      "job": 119722627772,
      "time": 107,
      "config": "windows-devel-x86_64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "12412057705"
    },
    {
      "job": 119722627768,
      "time": 113,
      "config": "windows-oldrel-x86_64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "12412067668"
    },
    {
      "job": 119722627861,
      "time": 119,
      "config": "windows-release-x86_64",
      "r": "4.6.1",
      "check": "OK",
      "artifact": "12412083666"
    }
  ],
  "_buildurl": "https://github.com/r-universe/robinhankin/actions/runs/39747590599",
  "_commit": {
    "id": "58c8bcc4de086907d61930765be59a6fe4c5015c",
    "author": "robin <hankin.robin@gmail.com>",
    "committer": "robin <hankin.robin@gmail.com>",
    "message": "typo and new version number\n",
    "time": 1787474086
  },
  "_distro": "resolute",
  "_host": "GitHub-Actions",
  "_registered": true,
  "_dependencies": [
    {
      "package": "R",
      "version": ">= 4.1.0",
      "role": "Depends"
    },
    {
      "package": "freealg",
      "version": ">= 1.0-4",
      "role": "Imports"
    },
    {
      "package": "magic",
      "version": ">= 1.5-9",
      "role": "Imports"
    },
    {
      "package": "magrittr",
      "role": "Imports"
    },
    {
      "package": "methods",
      "role": "Imports"
    },
    {
      "package": "plyr",
      "role": "Imports"
    },
    {
      "package": "knitr",
      "role": "Suggests"
    },
    {
      "package": "rmarkdown",
      "role": "Suggests"
    },
    {
      "package": "permutations",
      "role": "Suggests"
    },
    {
      "package": "testthat",
      "role": "Suggests"
    },
    {
      "package": "covr",
      "role": "Suggests"
    }
  ],
  "_owner": "robinhankin",
  "_selfowned": true,
  "_usedby": 0,
  "_updates": [
    {
      "week": "2025-49",
      "n": 1
    },
    {
      "week": "2026-06",
      "n": 3
    },
    {
      "week": "2026-11",
      "n": 1
    },
    {
      "week": "2026-12",
      "n": 4
    },
    {
      "week": "2026-27",
      "n": 2
    },
    {
      "week": "2026-29",
      "n": 3
    },
    {
      "week": "2026-32",
      "n": 4
    },
    {
      "week": "2026-34",
      "n": 1
    }
  ],
  "_tags": [
    {
      "name": "1.2-1",
      "date": "2026-07-15"
    },
    {
      "name": "1.2-1-1",
      "date": "2026-08-07"
    }
  ],
  "_stars": 0,
  "_contributors": [
    {
      "user": "robinhankin",
      "count": 361,
      "uuid": 13262034
    }
  ],
  "_userbio": {
    "uuid": 13262034,
    "type": "user",
    "name": "Robin Hankin",
    "followers": 70,
    "description": "pushing the boundaries of R in non-statistical contexts"
  },
  "_downloads": {
    "count": 389,
    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/freegroup"
  },
  "_devurl": "https://github.com/robinhankin/freegroup",
  "_pkgdown": "https://robinhankin.github.io/freegroup/",
  "_searchresults": 35,
  "_rbuild": "4.6.1",
  "_assets": [
    "extra/citation.cff",
    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/freegroup.html",
    "extra/manual.pdf",
    "extra/NEWS.html",
    "extra/NEWS.txt",
    "extra/readme.html",
    "extra/readme.md"
  ],
  "_homeurl": "https://github.com/robinhankin/freegroup",
  "_realowner": "robinhankin",
  "_cranurl": true,
  "_releases": [
    {
      "version": "1.0",
      "date": "2018-05-16"
    },
    {
      "version": "1.0-2",
      "date": "2018-08-06"
    },
    {
      "version": "1.1-0",
      "date": "2018-09-25"
    },
    {
      "version": "1.1-3",
      "date": "2021-11-20"
    },
    {
      "version": "1.1-6",
      "date": "2022-12-14"
    },
    {
      "version": "1.1-8",
      "date": "2024-01-13"
    },
    {
      "version": "1.1-9",
      "date": "2025-01-30"
    },
    {
      "version": "1.2-0",
      "date": "2025-03-22"
    },
    {
      "version": "1.2-1",
      "date": "2026-07-15"
    },
    {
      "version": "1.2-1-1",
      "date": "2026-08-21"
    }
  ],
  "_exports": [
    "%~%",
    "abc",
    "abelianize",
    "allconj",
    "alpha",
    "as.character_free",
    "as.cyclically_reduced",
    "as.free",
    "autosub",
    "autosub_lowlevel",
    "backwards",
    "bigness",
    "char_to_free",
    "char_to_matrix",
    "consolidate",
    "cyclically_reduce",
    "cyclically_reduce_tietze",
    "discard",
    "donames",
    "flip",
    "free",
    "free_equal",
    "free_power",
    "free_repeat",
    "getlet",
    "id",
    "inverse",
    "is_proper",
    "is_reduced",
    "is.abelian",
    "is.conjugate",
    "is.conjugate_single",
    "is.cyclically_reduced",
    "is.free",
    "is.id",
    "is.power",
    "is.primitive",
    "juxtapose",
    "keep",
    "list_to_free",
    "number",
    "permsymb",
    "permsymb_single_f",
    "permsymb_single_X",
    "permsymb_vec",
    "reduce",
    "remove_zero_powers",
    "rfree",
    "rfreee",
    "rfreeee",
    "shift",
    "size",
    "subs",
    "subsu",
    "tietze",
    "total",
    "vec_to_matrix"
  ],
  "_datasets": [
    {
      "name": ".",
      "title": "Class \"dot\"",
      "object": "dot",
      "class": [
        "dot"
      ],
      "fields": [],
      "table": false,
      "tojson": false
    }
  ],
  "_help": [
    {
      "page": "freegroup-package",
      "title": "The Free Group",
      "topics": [
        "freegroup-package",
        "freegroup"
      ]
    },
    {
      "page": "abelianize",
      "title": "Abelianization of free group elements",
      "topics": [
        "abelianize",
        "abelianized",
        "is.abelian"
      ]
    },
    {
      "page": "abs",
      "title": "Absolute value of a 'free' object",
      "topics": [
        "abs",
        "abs.free"
      ]
    },
    {
      "page": "alpha",
      "title": "Alphabetical free group elements",
      "topics": [
        "abc",
        "alpha",
        "alphabet"
      ]
    },
    {
      "page": "backwards",
      "title": "Write free objects backwards",
      "topics": [
        "backwards"
      ]
    },
    {
      "page": "c",
      "title": "Concatenation of free objects",
      "topics": [
        "c",
        "c.free",
        "rep.free"
      ]
    },
    {
      "page": "char_to_free",
      "title": "Convert character vectors to free objects",
      "topics": [
        "char_to_free",
        "char_to_matrix"
      ]
    },
    {
      "page": "cumsum",
      "title": "Cumulative sum",
      "topics": [
        "cumsum",
        "cumsum.free"
      ]
    },
    {
      "page": "cycred",
      "title": "Cyclic reductions of a word",
      "topics": [
        "%~%",
        "allconj",
        "as.cyclically_reduced",
        "conjugate",
        "cyclic",
        "cyclically",
        "cyclically_reduce",
        "cyclically_reduced",
        "cyclically_reduce_tietze",
        "cyclic_reduction",
        "cycred",
        "is.conjugate",
        "is.conjugate.free",
        "is.conjugate_single",
        "is.cyclically.reduced",
        "is.cyclically_reduced"
      ]
    },
    {
      "page": "donames",
      "title": "Names attributes of free group elements",
      "topics": [
        "donames",
        "names"
      ]
    },
    {
      "page": "dot",
      "title": "Class \"dot\"",
      "topics": [
        ".",
        "commutator",
        "dot",
        "dot-class",
        "dot_error",
        "extract",
        "jacobi",
        "[,dot,ANY,ANY-method",
        "[,dot,free,ANY,ANY-method",
        "[,dot-method",
        "[.dot"
      ]
    },
    {
      "page": "Extract",
      "title": "Extract or replace parts of a free group object",
      "topics": [
        "Extract.free",
        "[.free",
        "[<-.free"
      ]
    },
    {
      "page": "free",
      "title": "Objects of class 'free'",
      "topics": [
        "as.free",
        "free",
        "free-class",
        "is.free",
        "list_to_free"
      ]
    },
    {
      "page": "getlet",
      "title": "Get letters of a freegroup object",
      "topics": [
        "getlet"
      ]
    },
    {
      "page": "identity",
      "title": "The identity element",
      "topics": [
        "id",
        "identity",
        "is.id",
        "is.id.free",
        "is.identity",
        "neutral"
      ]
    },
    {
      "page": "keep",
      "title": "Keep or drop symbols",
      "topics": [
        "discard",
        "drop",
        "drop.free",
        "keep",
        "retain"
      ]
    },
    {
      "page": "outer",
      "title": "Outer automorphisms of the free group",
      "topics": [
        "automorphism",
        "automorphisms",
        "autosub",
        "autosub_lowlevel",
        "nielsen",
        "outer",
        "permsymb",
        "permsymb_single_f",
        "permsymb_single_X",
        "permsymb_vec"
      ]
    },
    {
      "page": "Ops.free",
      "title": "Arithmetic Ops methods for the free group",
      "topics": [
        "free_equal",
        "free_power",
        "free_repeat",
        "inverse",
        "inverse.free",
        "inverse.matrix",
        "juxtapose",
        "ops",
        "Ops.free"
      ]
    },
    {
      "page": "primitive",
      "title": "Primitive elements of the free algebra",
      "topics": [
        "is.power",
        "is.primitive",
        "primitive"
      ]
    },
    {
      "page": "print",
      "title": "Print free objects",
      "topics": [
        "as.character_free",
        "print.free",
        "print.freegroup"
      ]
    },
    {
      "page": "reduce",
      "title": "Reduction of a word to reduced form",
      "topics": [
        "consolidate",
        "is_proper",
        "is_reduced",
        "reduce",
        "remove_zero_powers"
      ]
    },
    {
      "page": "rfree",
      "title": "Random free objects",
      "topics": [
        "rfree",
        "rfreee",
        "rfreeee"
      ]
    },
    {
      "page": "shift",
      "title": "Permute elements of a vector in a cycle",
      "topics": [
        "shift"
      ]
    },
    {
      "page": "size",
      "title": "Bignesses of a free object",
      "topics": [
        "bigness",
        "number",
        "size",
        "total"
      ]
    },
    {
      "page": "subs",
      "title": "Substitute and invert symbols",
      "topics": [
        "flip",
        "subs",
        "subsu"
      ]
    },
    {
      "page": "sum",
      "title": "Repeated summation by concatenation",
      "topics": [
        "freeprod",
        "prodfree",
        "sum",
        "sum.free"
      ]
    },
    {
      "page": "tietze",
      "title": "Tietze form for free group objects",
      "topics": [
        "Tietze",
        "tietze",
        "tietze.free",
        "tietze.matrix",
        "vec_to_matrix"
      ]
    }
  ],
  "_readme": "https://github.com/robinhankin/freegroup/raw/HEAD/README.md",
  "_rundeps": [
    "abind",
    "digest",
    "disordR",
    "freealg",
    "gmp",
    "lattice",
    "magic",
    "magrittr",
    "Matrix",
    "partitions",
    "plyr",
    "polynom",
    "rbibutils",
    "Rcpp",
    "Rdpack",
    "sets"
  ],
  "_vignettes": [
    {
      "source": "freegroup.Rnw",
      "filename": "freegroup.pdf",
      "title": "The freegroup package",
      "engine": "utils::Sweave",
      "headings": [
        "Introduction",
        "The package in use",
        "Conclusions and further work"
      ],
      "created": "2019-02-21 18:39:07",
      "modified": "2026-07-01 06:43:43",
      "commits": 27
    }
  ],
  "_score": 5.146128035678238,
  "_indexed": true,
  "_nocasepkg": "freegroup",
  "_universes": [
    "robinhankin"
  ],
  "_binaries": [
    {
      "r": "4.7.0",
      "os": "linux",
      "version": "1.2-2",
      "date": "2026-10-22T08:34:08.000Z",
      "distro": "resolute",
      "commit": "58c8bcc4de086907d61930765be59a6fe4c5015c",
      "fileid": "https://r2.ropensci.org/852d7512531d3b7e869fef8d1f2b5dcaedb9666a7f96702c9487db010c0c4ed1",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/robinhankin/actions/runs/39747590599"
    },
    {
      "r": "4.6.1",
      "os": "linux",
      "version": "1.2-2",
      "date": "2026-10-22T08:33:36.000Z",
      "distro": "resolute",
      "commit": "58c8bcc4de086907d61930765be59a6fe4c5015c",
      "fileid": "https://r2.ropensci.org/80ae003d394ca6b149c812a6ebeb3dd485bb31b04eb26dd8b07451fcabb9e3ea",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/robinhankin/actions/runs/39747590599"
    },
    {
      "r": "4.5.3",
      "os": "mac",
      "version": "1.2-2",
      "date": "2026-10-22T08:33:21.000Z",
      "commit": "58c8bcc4de086907d61930765be59a6fe4c5015c",
      "fileid": "https://r2.ropensci.org/82fd2afdc9db0bfeba856e3f5c94243dac0fdae0b1f9050976c5e82aeacd7e33",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/robinhankin/actions/runs/39747590599"
    },
    {
      "r": "4.6.1",
      "os": "mac",
      "version": "1.2-2",
      "date": "2026-10-22T08:33:20.000Z",
      "commit": "58c8bcc4de086907d61930765be59a6fe4c5015c",
      "fileid": "https://r2.ropensci.org/848d4eb2a145aa7588bb707d5880c4473fcaa22031360fe2b60045f58569e2aa",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/robinhankin/actions/runs/39747590599"
    },
    {
      "r": "4.6.0",
      "os": "wasm",
      "version": "1.2-2",
      "date": "2026-10-22T08:33:34.000Z",
      "commit": "58c8bcc4de086907d61930765be59a6fe4c5015c",
      "fileid": "https://r2.ropensci.org/f361e6a1423567aef902d2d5268bdfe1d7acdd0203fc1ee1887676f548925e2d",
      "status": "success",
      "buildurl": "https://github.com/r-universe/robinhankin/actions/runs/39747590599"
    },
    {
      "r": "4.7.0",
      "os": "win",
      "version": "1.2-2",
      "date": "2026-10-22T08:32:50.000Z",
      "commit": "58c8bcc4de086907d61930765be59a6fe4c5015c",
      "fileid": "https://r2.ropensci.org/9885f9284dcf6b53a79920e68cbda042efec7b996dabcbe2da8d2e1638acb7f0",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/robinhankin/actions/runs/39747590599"
    },
    {
      "r": "4.5.3",
      "os": "win",
      "version": "1.2-2",
      "date": "2026-10-22T08:32:56.000Z",
      "commit": "58c8bcc4de086907d61930765be59a6fe4c5015c",
      "fileid": "https://r2.ropensci.org/7de0e4e1f499ceab6f4c2ecab3cdc6e337dc8d8cf674dfcf8a576c3bf674236d",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/robinhankin/actions/runs/39747590599"
    },
    {
      "r": "4.6.1",
      "os": "win",
      "version": "1.2-2",
      "date": "2026-10-22T08:32:50.000Z",
      "commit": "58c8bcc4de086907d61930765be59a6fe4c5015c",
      "fileid": "https://r2.ropensci.org/9f3553bca7b8647af610a1b4bd5e226d2d59e267205c5bda8fa37aa4ce1670ee",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/robinhankin/actions/runs/39747590599"
    }
  ]
}