Pith Number

pith:76SQMV3C

pith:2013:76SQMV3CESAGODEFTX6V5TRXCB

not attested not anchored not stored refs pending

Flipping surfaces

Giancarlo Urz\'ua, Jenia Tevelev, Paul Hacking

arxiv:1310.1580 v2 · 2013-10-06 · 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{76SQMV3CESAGODEFTX6V5TRXCB}

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	2026-05-18T01:37:28.946263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffa50657622480670c859dfd5ece37105164c46cc002d18dbb972f24f71f6f0d

Aliases

arxiv: 1310.1580 · arxiv_version: 1310.1580v2 · doi: 10.48550/arxiv.1310.1580 · pith_short_12: 76SQMV3CESAG · pith_short_16: 76SQMV3CESAGODEF · pith_short_8: 76SQMV3C

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/76SQMV3CESAGODEFTX6V5TRXCB \
  | 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: ffa50657622480670c859dfd5ece37105164c46cc002d18dbb972f24f71f6f0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "507ff7e32c710f477a8affab57d9fff2e2157ea0a700350739fb17da01ac68ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-10-06T12:45:05Z",
    "title_canon_sha256": "0fb29202d16424fdb720e6ecffa2c246fec222e5072535268ed54e0f47c5661b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1580",
    "kind": "arxiv",
    "version": 2
  }
}