Pith Number

pith:6BU67G6D

pith:2026:6BU67G6DDMON3X3JZDD5L3O6QY

not attested not anchored not stored refs pending

A Nine-Compartment Nonlinear Epidemic Model with Spline-Based Identification of Time-Varying Transmission and Vaccination Dynamics: Application to the COVID-19 Third Wave in Italy

Alberto Firenze, Antonino Lo Burgio, Antonino Sferlazza, Dominique Persano Adorno, Filippo D'Ippolito, Ivan Marchese, Lars Gr\"une, Lokman Rachid Melhani, Omar Enzo Santangelo

arxiv:2606.07413 v1 · 2026-06-05 · math.OC · 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{6BU67G6DDMON3X3JZDD5L3O6QY}

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	2026-06-08T01:05:25.617661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f069ef9bc31b1cdddf69c8c7d5edde860377f2d8a23379a68dc52adde1635525

Aliases

arxiv: 2606.07413 · arxiv_version: 2606.07413v1 · doi: 10.48550/arxiv.2606.07413 · pith_short_12: 6BU67G6DDMON · pith_short_16: 6BU67G6DDMON3X3J · pith_short_8: 6BU67G6D

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/6BU67G6DDMON3X3JZDD5L3O6QY \
  | 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: f069ef9bc31b1cdddf69c8c7d5edde860377f2d8a23379a68dc52adde1635525

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41bea31e235c6c2b5068e37c1ce5d457f2c0ecaa18fab4d73ada0a37829d6a89",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2026-06-05T16:01:12Z",
    "title_canon_sha256": "f01b89672003e8bd6790513303e865d5ca737a2a0ed89c818fb278995073f365"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.07413",
    "kind": "arxiv",
    "version": 1
  }
}