Pith Number

pith:F3GFWDNJ

pith:2015:F3GFWDNJBZCVE4RNB3B24BCZGX

not attested not anchored not stored refs pending

Mortality cohort effect detection and measurement based on differential geometry

Liang Zhao, Ning Zhang

arxiv:1504.00327 v2 · 2015-03-31 · stat.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{F3GFWDNJBZCVE4RNB3B24BCZGX}

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	2026-05-18T02:19:43.463594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ecc5b0da90e4552722d0ec3ae045935fb0d91e37dbe75613ef3a1a6eca1f1bc

Aliases

arxiv: 1504.00327 · arxiv_version: 1504.00327v2 · doi: 10.48550/arxiv.1504.00327 · pith_short_12: F3GFWDNJBZCV · pith_short_16: F3GFWDNJBZCVE4RN · pith_short_8: F3GFWDNJ

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/F3GFWDNJBZCVE4RNB3B24BCZGX \
  | 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: 2ecc5b0da90e4552722d0ec3ae045935fb0d91e37dbe75613ef3a1a6eca1f1bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c280d0519528ac7197fe0f97f3583297bdb10e26a84ab48b3e43be861c03ed04",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2015-03-31T06:06:20Z",
    "title_canon_sha256": "db8b1bf615174ac76f48693f10d0c72f9dcaf92922f302448e8f9b3a71acaef0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.00327",
    "kind": "arxiv",
    "version": 2
  }
}