Pith Number

pith:UEOYRC2E

pith:2014:UEOYRC2E2RFZQKQZRN6TYDRWDM

not attested not anchored not stored refs pending

An L2-quotient algorithm for finitely presented groups on arbitrarily many generators

Sebastian Jambor

arxiv:1402.6788 v1 · 2014-02-27 · 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{UEOYRC2E2RFZQKQZRN6TYDRWDM}

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	2026-05-18T02:57:37.032491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a11d888b44d44b982a198b7d3c0e361b2a1fd12424bd4d4e859411fd9da4b20b

Aliases

arxiv: 1402.6788 · arxiv_version: 1402.6788v1 · doi: 10.48550/arxiv.1402.6788 · pith_short_12: UEOYRC2E2RFZ · pith_short_16: UEOYRC2E2RFZQKQZ · pith_short_8: UEOYRC2E

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/UEOYRC2E2RFZQKQZRN6TYDRWDM \
  | 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: a11d888b44d44b982a198b7d3c0e361b2a1fd12424bd4d4e859411fd9da4b20b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed0ba6f4f974e6a8a59f89e4a31b207a9551755029a254c744ae08c433723ea0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2014-02-27T04:41:44Z",
    "title_canon_sha256": "bf8b4acca9bd80ec8a29c01ca932903199c1b26a63e9d0a0a34c03b17911ed06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.6788",
    "kind": "arxiv",
    "version": 1
  }
}