Pith Number

pith:NH6LMJ7U

pith:2011:NH6LMJ7UVC4GHUEVIU3DKHKXIG

not attested not anchored not stored refs pending

The total surgery obstruction revisited

Adam Mole, Philipp Kuehl, Tibor Macko

arxiv:1104.5092 v2 · 2011-04-27 · math.AT · 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{NH6LMJ7UVC4GHUEVIU3DKHKXIG}

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	2026-05-18T04:12:42.718503Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69fcb627f4a8b863d0954536351d5741b35ee0f4929f52e744ea709d904f16ba

Aliases

arxiv: 1104.5092 · arxiv_version: 1104.5092v2 · doi: 10.48550/arxiv.1104.5092 · pith_short_12: NH6LMJ7UVC4G · pith_short_16: NH6LMJ7UVC4GHUEV · pith_short_8: NH6LMJ7U

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/NH6LMJ7UVC4GHUEVIU3DKHKXIG \
  | 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: 69fcb627f4a8b863d0954536351d5741b35ee0f4929f52e744ea709d904f16ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e061857a7de9d56facb0113d4f6c728c4acaf030f961ea186a93deafc3e7d896",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2011-04-27T08:42:19Z",
    "title_canon_sha256": "98dbefdd44838648dcf8c583a491ac3a93a36f392266cfbbd29cd6c269a256e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.5092",
    "kind": "arxiv",
    "version": 2
  }
}