Pith Number

pith:OCCZZB6G

pith:2012:OCCZZB6GIDZIXTOHV6WGHSPPEB

not attested not anchored not stored refs pending

Efficient algorithms for highly compressed data: The Word Problem in Generalized Higman Groups is in P

J\"urn Laun

arxiv:1207.6944 v2 · 2012-07-30 · math.GR · cs.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OCCZZB6GIDZIXTOHV6WGHSPPEB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:49:10.005033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70859c87c640f28bcdc7afac63c9ef2067668b68c663b6f8afe5fc16504b6c36

Aliases

arxiv: 1207.6944 · arxiv_version: 1207.6944v2 · doi: 10.48550/arxiv.1207.6944 · pith_short_12: OCCZZB6GIDZI · pith_short_16: OCCZZB6GIDZIXTOH · pith_short_8: OCCZZB6G

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/OCCZZB6GIDZIXTOHV6WGHSPPEB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 70859c87c640f28bcdc7afac63c9ef2067668b68c663b6f8afe5fc16504b6c36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df5d3a855d969f95eadc880f3544b0256e915ddd774589555c0a6bb8ffeef71c",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2012-07-30T14:30:58Z",
    "title_canon_sha256": "ac40bea6d156147b5eff88221937800b4affee7b5bc127a5fe5bc63106c8f787"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.6944",
    "kind": "arxiv",
    "version": 2
  }
}