Pith Number

pith:ANSRODVQ

pith:2012:ANSRODVQBXAEW2GEI7HNF5GVLG

not attested not anchored not stored refs pending

Contracting the boundary of a Riemannian 2-disc

Alexander Nabutovsky, Regina Rotman, Yevgeny Liokumovich

arxiv:1205.5474 v2 · 2012-05-24 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ANSRODVQBXAEW2GEI7HNF5GVLG}

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	2026-05-18T02:32:14.678887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0365170eb00dc04b68c447ced2f4d559ab2f237b1e54b06dc61ddd0ccb63427f

Aliases

arxiv: 1205.5474 · arxiv_version: 1205.5474v2 · doi: 10.48550/arxiv.1205.5474 · pith_short_12: ANSRODVQBXAE · pith_short_16: ANSRODVQBXAEW2GE · pith_short_8: ANSRODVQ

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/ANSRODVQBXAEW2GEI7HNF5GVLG \
  | 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: 0365170eb00dc04b68c447ced2f4d559ab2f237b1e54b06dc61ddd0ccb63427f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7be4f485271a2f45a33d502731ac782be244bbe939ef4477f718c85030662214",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-05-24T14:57:17Z",
    "title_canon_sha256": "d97d1e65c3aa4b86d711bc203d3813d5ddcb07119637ede930d5e6abe9a733e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.5474",
    "kind": "arxiv",
    "version": 2
  }
}