Pith Number

pith:IWWVTBRW

pith:2013:IWWVTBRW62THY6ZA33GU6GM3LE

not attested not anchored not stored refs pending

The unitary cover of a finite group and the exponent of the Schur multiplier

Nicola Sambonet

arxiv:1312.5196 v1 · 2013-12-18 · 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{IWWVTBRW62THY6ZA33GU6GM3LE}

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	2026-05-18T00:30:29.052183Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45ad598636f6a67c7b20decd4f199b5920e4690ab89699a2d9b0f7b9bf872540

Aliases

arxiv: 1312.5196 · arxiv_version: 1312.5196v1 · doi: 10.48550/arxiv.1312.5196 · pith_short_12: IWWVTBRW62TH · pith_short_16: IWWVTBRW62THY6ZA · pith_short_8: IWWVTBRW

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/IWWVTBRW62THY6ZA33GU6GM3LE \
  | 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: 45ad598636f6a67c7b20decd4f199b5920e4690ab89699a2d9b0f7b9bf872540

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e8afa70adcda55aa9291ee873ead6811b19dd66aac024f761a2f7819a0dc4d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2013-12-18T16:08:28Z",
    "title_canon_sha256": "f099c48eac99157a71a3d0cec0b009fb69d5a513e4271da2bdc3ddb21f53ce63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.5196",
    "kind": "arxiv",
    "version": 1
  }
}