Pith Number

pith:XPOWWBZ3

pith:2019:XPOWWBZ3M43FGFSSMI7QBXKQ6L

not attested not anchored not stored refs pending

Model for heterogeneous reaction-diffusion systems with application to one epidemic

Orlando Silva

arxiv:1908.09149 v1 · 2019-08-24 · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XPOWWBZ3M43FGFSSMI7QBXKQ6L}

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	2026-07-04T23:59:37.233650Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbdd6b073b6736531652623f00dd50f2cb8a8f47df96d69c683619eeaaf98d33

Aliases

arxiv: 1908.09149 · arxiv_version: 1908.09149v1 · doi: 10.48550/arxiv.1908.09149 · pith_short_12: XPOWWBZ3M43F · pith_short_16: XPOWWBZ3M43FGFSS · pith_short_8: XPOWWBZ3

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/XPOWWBZ3M43FGFSSMI7QBXKQ6L \
  | 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: bbdd6b073b6736531652623f00dd50f2cb8a8f47df96d69c683619eeaaf98d33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa39daaf8b820b1250f0cb10e40f03081015a4aa4b93a3ab44537ea2538d7fff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2019-08-24T15:14:51Z",
    "title_canon_sha256": "1bd5d315b92fd98a06d4eefe6853233a1127fb3380bd709133bea2b93fa76435"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09149",
    "kind": "arxiv",
    "version": 1
  }
}