Pith Number

pith:NZAVPMUS

pith:2010:NZAVPMUSAGHCQYNXWZ6LH4BJOB

not attested not anchored not stored refs pending

Contact monoids and Stein cobordisms

John A. Baldwin

arxiv:1005.2169 v1 · 2010-05-12 · 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{NZAVPMUSAGHCQYNXWZ6LH4BJOB}

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	2026-05-18T02:24:07.800494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e4157b292018e2861b7b67cb3f0297051f4ee655641725df1635b4690242bce

Aliases

arxiv: 1005.2169 · arxiv_version: 1005.2169v1 · doi: 10.48550/arxiv.1005.2169 · pith_short_12: NZAVPMUSAGHC · pith_short_16: NZAVPMUSAGHCQYNX · pith_short_8: NZAVPMUS

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/NZAVPMUSAGHCQYNXWZ6LH4BJOB \
  | 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: 6e4157b292018e2861b7b67cb3f0297051f4ee655641725df1635b4690242bce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5096dcf8657a39f1fe24bb77c5c21aeae39fa0e807b1d0e65a6425b9d0eed7c",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2010-05-12T18:31:35Z",
    "title_canon_sha256": "ceacb39f1e4dc016341539337a22be37f6341e3111d854fff795e3226f9b539c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.2169",
    "kind": "arxiv",
    "version": 1
  }
}