Pith Number

pith:4ZBIIVVN

pith:2008:4ZBIIVVNDSWBEJSFSMC237CC3W

not attested not anchored not stored refs pending

A convolution estimate for two-dimensional hypersurfaces

Daniel Tataru, Ioan Bejenaru, Sebastian Herr

arxiv:0809.5091 v3 · 2008-09-30 · math.AP · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ZBIIVVNDSWBEJSFSMC237CC3W}

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	2026-05-18T03:05:07.940076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6428456ad1cac1226459305adfc42ddbca3d68e9e8c44efc2334f0f682dc7b2

Aliases

arxiv: 0809.5091 · arxiv_version: 0809.5091v3 · doi: 10.48550/arxiv.0809.5091 · pith_short_12: 4ZBIIVVNDSWB · pith_short_16: 4ZBIIVVNDSWBEJSF · pith_short_8: 4ZBIIVVN

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/4ZBIIVVNDSWBEJSFSMC237CC3W \
  | 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: e6428456ad1cac1226459305adfc42ddbca3d68e9e8c44efc2334f0f682dc7b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2e569a2347a984195ca7aaf9148391677da557dc785751e5337a3bd6d62d133",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2008-09-30T18:48:49Z",
    "title_canon_sha256": "c830b9b43f2f1ed8ffc838f06948cc9c9e321ba790e024bd219a35042dff54ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.5091",
    "kind": "arxiv",
    "version": 3
  }
}