Pith Number

pith:G7U2I3AH

pith:2013:G7U2I3AHDWHWQS2GICDSMZL5VV

not attested not anchored not stored refs pending

On the character variety of the four-holed sphere

Frederic Palesi, Sara Maloni, Ser Peow Tan

arxiv:1304.5770 v1 · 2013-04-21 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G7U2I3AHDWHWQS2GICDSMZL5VV}

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	2026-05-18T03:27:24.194836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37e9a46c071d8f684b46408726657dad726fc8900173e6e812ea1325c34ea534

Aliases

arxiv: 1304.5770 · arxiv_version: 1304.5770v1 · doi: 10.48550/arxiv.1304.5770 · pith_short_12: G7U2I3AHDWHW · pith_short_16: G7U2I3AHDWHWQS2G · pith_short_8: G7U2I3AH

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/G7U2I3AHDWHWQS2GICDSMZL5VV \
  | 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: 37e9a46c071d8f684b46408726657dad726fc8900173e6e812ea1325c34ea534

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edf981a78a3b4fe8aa85438943f3876a11d967743cc909fd12b1c6b6b1f5e3b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2013-04-21T17:30:29Z",
    "title_canon_sha256": "948f3cecaf91861a88834bddd5562aa6b18a945b30fb9d40d4daf21a97a41a9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5770",
    "kind": "arxiv",
    "version": 1
  }
}