Pith Number

pith:R2KKIMFK

pith:2013:R2KKIMFKCSMGDWGBTGDUFUSWXZ

not attested not anchored not stored refs pending

Riemannian Curl in Contact Geometry

Sofiane Bouarroudj, Valentin Ovsienko

arxiv:1307.2155 v3 · 2013-07-08 · 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{R2KKIMFKCSMGDWGBTGDUFUSWXZ}

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	2026-05-18T00:05:08.261897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e94a430aa149861d8c1998742d256be75dfaa97a1dae493a25bee1bc4046834

Aliases

arxiv: 1307.2155 · arxiv_version: 1307.2155v3 · doi: 10.48550/arxiv.1307.2155 · pith_short_12: R2KKIMFKCSMG · pith_short_16: R2KKIMFKCSMGDWGB · pith_short_8: R2KKIMFK

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/R2KKIMFKCSMGDWGBTGDUFUSWXZ \
  | 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: 8e94a430aa149861d8c1998742d256be75dfaa97a1dae493a25bee1bc4046834

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d81d83d5a43446e2d8a4e6c5e15031655a4ae709aa37bd10f7c42ae0042693d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-07-08T16:43:49Z",
    "title_canon_sha256": "b95400bc2d33b706de7601eb38ad5d8de98b149a07ff34c644485d8f59caa5b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2155",
    "kind": "arxiv",
    "version": 3
  }
}