Pith Number

pith:SEUNKWSR

pith:2013:SEUNKWSRHOLHR6ZQUZ2CAYAPRJ

not attested not anchored not stored refs pending

Generating the Johnson filtration

Andrew Putman, Thomas Church

arxiv:1311.7150 v2 · 2013-11-27 · math.GT · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SEUNKWSRHOLHR6ZQUZ2CAYAPRJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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.

Cited by

1 paper in Pith

Calculating the second rational cohomology group of the Torelli group

Receipt and verification

First computed	2026-05-18T01:35:33.070954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9128d55a513b9678fb30a67420600f8a4ae1fa4569bdc49e8fe1a5cf20c768d1

Aliases

arxiv: 1311.7150 · arxiv_version: 1311.7150v2 · doi: 10.48550/arxiv.1311.7150 · pith_short_12: SEUNKWSRHOLH · pith_short_16: SEUNKWSRHOLHR6ZQ · pith_short_8: SEUNKWSR

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/SEUNKWSRHOLHR6ZQUZ2CAYAPRJ \
  | 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: 9128d55a513b9678fb30a67420600f8a4ae1fa4569bdc49e8fe1a5cf20c768d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76776c6436099328791054eb66ca1d0ba6ce60323e1ac9c0e9037ede43aff4cd",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2013-11-27T21:00:08Z",
    "title_canon_sha256": "eb79940d3d6d470d654ed49026e7afbf26ad41cfeeba375dbc0305db707ae216"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.7150",
    "kind": "arxiv",
    "version": 2
  }
}