Pith Number

pith:T7A35OQ6

pith:2018:T7A35OQ6BX4GOTVLBAPEWF5LPO

not attested not anchored not stored refs pending

Effect of population density on epidemics

Bertrand M. Roehner, Peter Richmond, Ruiqi Li

arxiv:1803.03809 v1 · 2018-03-10 · physics.soc-ph · physics.bio-ph · 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{T7A35OQ6BX4GOTVLBAPEWF5LPO}

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	2026-05-18T00:08:09.992872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fc1beba1e0df8674eab081e4b17ab7b905dc6fbfa2d5d4ab2e96bc80c9b2fd8

Aliases

arxiv: 1803.03809 · arxiv_version: 1803.03809v1 · doi: 10.48550/arxiv.1803.03809 · pith_short_12: T7A35OQ6BX4G · pith_short_16: T7A35OQ6BX4GOTVL · pith_short_8: T7A35OQ6

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/T7A35OQ6BX4GOTVLBAPEWF5LPO \
  | 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: 9fc1beba1e0df8674eab081e4b17ab7b905dc6fbfa2d5d4ab2e96bc80c9b2fd8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6e1d9db7d5c14aa330de75324fc6a2baa04ea27bd857fc313bb0e9d3f042e19",
    "cross_cats_sorted": [
      "physics.bio-ph",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2018-03-10T14:05:02Z",
    "title_canon_sha256": "4ae133c3cddf827384585edc3808e29c77171309465790410ee8ce2aa45f99c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.03809",
    "kind": "arxiv",
    "version": 1
  }
}