Pith Number

pith:OGJTTJAD

pith:2012:OGJTTJAD52ZXRFNE7ZNZDVOGDH

not attested not anchored not stored refs pending

Homological stability of diffeomorphism groups

Alexander Berglund, Ib Madsen

arxiv:1203.4161 v2 · 2012-03-19 · 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{OGJTTJAD52ZXRFNE7ZNZDVOGDH}

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	2026-05-18T03:46:18.350282Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

719339a403eeb37895a4fe5b91d5c619e6eacf9c04513947c8847c2b97f360e5

Aliases

arxiv: 1203.4161 · arxiv_version: 1203.4161v2 · doi: 10.48550/arxiv.1203.4161 · pith_short_12: OGJTTJAD52ZX · pith_short_16: OGJTTJAD52ZXRFNE · pith_short_8: OGJTTJAD

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/OGJTTJAD52ZXRFNE7ZNZDVOGDH \
  | 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: 719339a403eeb37895a4fe5b91d5c619e6eacf9c04513947c8847c2b97f360e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "658bcb5644ca31c98e1965efa0f27a3093736bc7f67630095aefa996e95b8850",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-03-19T16:52:02Z",
    "title_canon_sha256": "f036e38b5f7ba11517f1b9671b1d9575c481f2f8158574dc0ca06489795a378e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4161",
    "kind": "arxiv",
    "version": 2
  }
}