Pith Number

pith:3FGKNWE2

pith:2010:3FGKNWE2J5SNRQ2ZMI4XIZALFG

not attested not anchored not stored refs pending

Sutures and contact homology I

Ko Honda, Michael Hutchings, Paolo Ghiggini, Vincent Colin

arxiv:1004.2942 v1 · 2010-04-17 · 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{3FGKNWE2J5SNRQ2ZMI4XIZALFG}

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	2026-05-18T02:38:18.576861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d94ca6d89a4f64d8c359623974640b299cced3bc0b178e4970ac19a796dd8848

Aliases

arxiv: 1004.2942 · arxiv_version: 1004.2942v1 · doi: 10.48550/arxiv.1004.2942 · pith_short_12: 3FGKNWE2J5SN · pith_short_16: 3FGKNWE2J5SNRQ2Z · pith_short_8: 3FGKNWE2

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/3FGKNWE2J5SNRQ2ZMI4XIZALFG \
  | 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: d94ca6d89a4f64d8c359623974640b299cced3bc0b178e4970ac19a796dd8848

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b5b4ca6a8eb05c069eeb172af43595dd52a722840d187998ad55915525e6078",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2010-04-17T04:16:41Z",
    "title_canon_sha256": "838aa489c0cf104cf92c3d7d093c929a88ca649484b0ff0d0b2cd18f76666249"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2942",
    "kind": "arxiv",
    "version": 1
  }
}