Pith Number

pith:J7N6O7RE

pith:2010:J7N6O7RED3L32NUFL4IAUVDXVT

not attested not anchored not stored refs pending

Average sex ratio and population maintenance cost

Eduardo Garibaldi, Marcelo Sobottka

arxiv:1004.2270 v3 · 2010-04-13 · 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{J7N6O7RED3L32NUFL4IAUVDXVT}

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	2026-05-18T00:50:48.370504Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fdbe77e241ed7bd36855f100a5477acc6ea151311c680394e0542b5ca3a5296

Aliases

arxiv: 1004.2270 · arxiv_version: 1004.2270v3 · doi: 10.48550/arxiv.1004.2270 · pith_short_12: J7N6O7RED3L3 · pith_short_16: J7N6O7RED3L32NUF · pith_short_8: J7N6O7RE

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/J7N6O7RED3L32NUFL4IAUVDXVT \
  | 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: 4fdbe77e241ed7bd36855f100a5477acc6ea151311c680394e0542b5ca3a5296

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e73c3bf1053c6d8228dc8810b91ee647cd42e78c1ab7f9a480378f3516aca9e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2010-04-13T21:10:58Z",
    "title_canon_sha256": "5ec9eb65ac5eb648eaa543d19edde8ae878bfaaefc2e60c7de4b768fdc5aec83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2270",
    "kind": "arxiv",
    "version": 3
  }
}