Pith Number

pith:4EHAIMRY

pith:2010:4EHAIMRYQVRCLAFOK6RTY7DKF4

not attested not anchored not stored refs pending

A geometric refinement of a theorem of Chekanov

Francois Charette

arxiv:1011.0392 v2 · 2010-11-01 · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4EHAIMRYQVRCLAFOK6RTY7DKF4}

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	2026-05-18T03:17:25.220901Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e10e04323885622580ae57a33c7c6a2f18961e1608abceb6a16100e875200460

Aliases

arxiv: 1011.0392 · arxiv_version: 1011.0392v2 · doi: 10.48550/arxiv.1011.0392 · pith_short_12: 4EHAIMRYQVRC · pith_short_16: 4EHAIMRYQVRCLAFO · pith_short_8: 4EHAIMRY

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/4EHAIMRYQVRCLAFOK6RTY7DKF4 \
  | 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: e10e04323885622580ae57a33c7c6a2f18961e1608abceb6a16100e875200460

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb6aa87d0652b871dd286e78ea0636cee33dc431c8893d6b2baf41e160599e5b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2010-11-01T17:36:52Z",
    "title_canon_sha256": "d3e01679808cfe54366b5d4664940ecbe1c45f40629e5fc342c457c38c5cc841"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.0392",
    "kind": "arxiv",
    "version": 2
  }
}