Pith Number

pith:2NKVFISD

pith:2009:2NKVFISDQ3K56YH65K3SCI7AOF

not attested not anchored not stored refs pending

Examples of hypersurfaces flowing by curvature in a Riemannian manifold

Guoyi Xu, Robert Gulliver

arxiv:0904.1255 v2 · 2009-04-08 · 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{2NKVFISDQ3K56YH65K3SCI7AOF}

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	2026-05-18T03:12:33.636124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d35552a24386d5df60feeab72123e071642def152bdaf92433990df1efab7bbc

Aliases

arxiv: 0904.1255 · arxiv_version: 0904.1255v2 · doi: 10.48550/arxiv.0904.1255 · pith_short_12: 2NKVFISDQ3K5 · pith_short_16: 2NKVFISDQ3K56YH6 · pith_short_8: 2NKVFISD

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/2NKVFISDQ3K56YH65K3SCI7AOF \
  | 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: d35552a24386d5df60feeab72123e071642def152bdaf92433990df1efab7bbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3817bdc38599a10e348a334696f2a23e074ed8cd19dfdf3e9a38da6fe522271f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-04-08T02:38:37Z",
    "title_canon_sha256": "e223f7d2af9410cf0922801fb598061f3603046a79c915274821eb769511162c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1255",
    "kind": "arxiv",
    "version": 2
  }
}