Pith Number

pith:A5262XJU

pith:2009:A5262XJUEQR4WEAQVZVRFBESNQ

not attested not anchored not stored refs pending

Rational linking and contact geometry

John B. Etnyre, Kenneth L. Baker

arxiv:0901.0380 v3 · 2009-01-04 · math.SG · 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{A5262XJUEQR4WEAQVZVRFBESNQ}

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	2026-05-18T02:54:53.942364Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0775ed5d342423cb1010ae6b1284926c13ca141b7cf5b181d5573843e3c7efa0

Aliases

arxiv: 0901.0380 · arxiv_version: 0901.0380v3 · doi: 10.48550/arxiv.0901.0380 · pith_short_12: A5262XJUEQR4 · pith_short_16: A5262XJUEQR4WEAQ · pith_short_8: A5262XJU

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/A5262XJUEQR4WEAQVZVRFBESNQ \
  | 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: 0775ed5d342423cb1010ae6b1284926c13ca141b7cf5b181d5573843e3c7efa0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac9ed0068562ca7374710dfcb06f38ed880200f60fe0747e6cbaf26ba73b0393",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2009-01-04T13:37:09Z",
    "title_canon_sha256": "43d6380a906e8a35d462488d9b3468b0569cdf724507949607b76969ba1005ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.0380",
    "kind": "arxiv",
    "version": 3
  }
}