Pith Number

pith:TIATSLS6

pith:2011:TIATSLS6ZEYDNBHTD6X463HLHY

not attested not anchored not stored refs pending

Efficient algorithms for highly compressed data: The Word Problem in Higman's group is in P

Alexander Ushakov, J\"urn Laun, Volker Diekert

arxiv:1103.1232 v1 · 2011-03-07 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TIATSLS6ZEYDNBHTD6X463HLHY}

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	2026-05-18T04:27:16.851481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a01392e5ec9303684f31fafcf6ceb3e381f016ea9c99942e86868058c810959

Aliases

arxiv: 1103.1232 · arxiv_version: 1103.1232v1 · doi: 10.48550/arxiv.1103.1232 · pith_short_12: TIATSLS6ZEYD · pith_short_16: TIATSLS6ZEYDNBHT · pith_short_8: TIATSLS6

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/TIATSLS6ZEYDNBHTD6X463HLHY \
  | 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: 9a01392e5ec9303684f31fafcf6ceb3e381f016ea9c99942e86868058c810959

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54cc8ddcb15af438e15233b3950d103a8c39d7cfcbefae7777e5d75c283f4e2c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2011-03-07T10:47:09Z",
    "title_canon_sha256": "2bf4288fb36b9226ae0fa06ce5f1efc9ed75a83793f2351c17059b887c91d468"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1232",
    "kind": "arxiv",
    "version": 1
  }
}