Pith Number

pith:RZOWR5U4

pith:2009:RZOWR5U43A7THBCVWSLXZAFJ2K

not attested not anchored not stored refs pending

Normal curvature bounds along the mean curvature flow

Hong Huang

arxiv:0906.2889 v3 · 2009-06-16 · math.DG · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RZOWR5U43A7THBCVWSLXZAFJ2K}

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	2026-05-18T04:23:22.286393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e5d68f69cd83f338455b4977c80a9d2b17d9e819ec0490e89961b129bad13f8

Aliases

arxiv: 0906.2889 · arxiv_version: 0906.2889v3 · doi: 10.48550/arxiv.0906.2889 · pith_short_12: RZOWR5U43A7T · pith_short_16: RZOWR5U43A7THBCV · pith_short_8: RZOWR5U4

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/RZOWR5U43A7THBCVWSLXZAFJ2K \
  | 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: 8e5d68f69cd83f338455b4977c80a9d2b17d9e819ec0490e89961b129bad13f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d74ce40c71c54016ccd835c9b370851b0b1e535b7d464c5797ff3e07ebc59de",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-06-16T14:57:27Z",
    "title_canon_sha256": "365c66821ff60ef6a650bdd60e48a7d5d42e5a0e840644d829d40d4b260da423"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2889",
    "kind": "arxiv",
    "version": 3
  }
}