Pith Number

pith:QR2L6KCN

pith:2016:QR2L6KCN2OVHDCA2HKW7BMMK5Q

not attested not anchored not stored refs pending

Jordan constant for Cremona group of rank 3

Constantin Shramov, Yuri Prokhorov

arxiv:1608.00709 v4 · 2016-08-02 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QR2L6KCN2OVHDCA2HKW7BMMK5Q}

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	2026-05-18T00:29:31.483457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8474bf284dd3aa71881a3aadf0b18aec3b2cd4cc6c4ba5053fa4c9c5f1a893ad

Aliases

arxiv: 1608.00709 · arxiv_version: 1608.00709v4 · doi: 10.48550/arxiv.1608.00709 · pith_short_12: QR2L6KCN2OVH · pith_short_16: QR2L6KCN2OVHDCA2 · pith_short_8: QR2L6KCN

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/QR2L6KCN2OVHDCA2HKW7BMMK5Q \
  | 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: 8474bf284dd3aa71881a3aadf0b18aec3b2cd4cc6c4ba5053fa4c9c5f1a893ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c8ed12a5bb35ca687c34dcd7aa0bda6d6e8b52f45c375719f024cb3bee134d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-08-02T06:29:23Z",
    "title_canon_sha256": "aa63866a36b9cedafdb1d3899016b432e274e4026985bd4dc2650717d5671528"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.00709",
    "kind": "arxiv",
    "version": 4
  }
}