Pith Number

pith:ICKVDZ6D

pith:2014:ICKVDZ6DUPMPL7OMPWMPCHH6PM

not attested not anchored not stored refs pending

Exact analytical solutions of the Susceptible-Infected-Recovered (SIR) epidemic model and of the SIR model with equal death and birth rates

Francisco S. N. Lobo, M. K. Mak, Tiberiu Harko

arxiv:1403.2160 v1 · 2014-03-10 · q-bio.PE · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ICKVDZ6DUPMPL7OMPWMPCHH6PM}

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	2026-05-18T02:53:28.547425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

409551e7c3a3d8f5fdcc7d98f11cfe7b0b57104e9122252ac40c893b83b0614a

Aliases

arxiv: 1403.2160 · arxiv_version: 1403.2160v1 · doi: 10.48550/arxiv.1403.2160 · pith_short_12: ICKVDZ6DUPMP · pith_short_16: ICKVDZ6DUPMPL7OM · pith_short_8: ICKVDZ6D

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/ICKVDZ6DUPMPL7OMPWMPCHH6PM \
  | 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: 409551e7c3a3d8f5fdcc7d98f11cfe7b0b57104e9122252ac40c893b83b0614a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8166608644ddb2a855377779cc8b48e0e2375bdb09a850963c49155f4963c2e5",
    "cross_cats_sorted": [
      "nlin.CD"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2014-03-10T08:21:07Z",
    "title_canon_sha256": "d8a505c0ec1a891abd4ffc2ff3993977120dfc614262fb680976c511c8d96461"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.2160",
    "kind": "arxiv",
    "version": 1
  }
}