Pith Number

pith:F2FPNHDE

pith:2014:F2FPNHDEPNAHZKYTS44ZWEBFTA

not attested not anchored not stored refs pending

Stability for the lens rigidity problem

Gang Bao, Hai Zhang

arxiv:1401.1019 v4 · 2014-01-06 · 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{F2FPNHDEPNAHZKYTS44ZWEBFTA}

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	2026-05-18T00:50:02.325391Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e8af69c647b407cab1397399b1025983c29d35d8747d2ceb122c5a98c3b86ac

Aliases

arxiv: 1401.1019 · arxiv_version: 1401.1019v4 · doi: 10.48550/arxiv.1401.1019 · pith_short_12: F2FPNHDEPNAH · pith_short_16: F2FPNHDEPNAHZKYT · pith_short_8: F2FPNHDE

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/F2FPNHDEPNAHZKYTS44ZWEBFTA \
  | 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: 2e8af69c647b407cab1397399b1025983c29d35d8747d2ceb122c5a98c3b86ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0fad06903462d473ff9d052f891919529285f7f293a2dd02d900fa079f57b5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-01-06T09:31:03Z",
    "title_canon_sha256": "5fc5276e87aa74e9d6e7b2baaf75e46ef4a1f7cd2637a5d316124ceef91febcb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1019",
    "kind": "arxiv",
    "version": 4
  }
}