Pith Number

pith:6A7VLVSU

pith:2013:6A7VLVSU63NTUQRGSAHPAN4IZN

not attested not anchored not stored refs pending

Nonlinear group survival in Kimura's model for the evolution of altruism

Jose F. Fontanari, Maurizio Serva

arxiv:1307.6177 v2 · 2013-07-23 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6A7VLVSU63NTUQRGSAHPAN4IZN}

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	2026-05-18T02:59:06.127686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f03f55d654f6db3a4226900ef03788cb5b341793b4cd82de473febb723e9ddf1

Aliases

arxiv: 1307.6177 · arxiv_version: 1307.6177v2 · doi: 10.48550/arxiv.1307.6177 · pith_short_12: 6A7VLVSU63NT · pith_short_16: 6A7VLVSU63NTUQRG · pith_short_8: 6A7VLVSU

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/6A7VLVSU63NTUQRGSAHPAN4IZN \
  | 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: f03f55d654f6db3a4226900ef03788cb5b341793b4cd82de473febb723e9ddf1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c8c56106d022c1e9f86df5dccb84713b0852a8788d0e269104f0ca0afd17947",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2013-07-23T18:01:11Z",
    "title_canon_sha256": "bdbfb77ae42585e193cfef237e2936303c857f5498c80698015d67a869c7f9db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6177",
    "kind": "arxiv",
    "version": 2
  }
}