Pith Number

pith:TZZFISCG

pith:2019:TZZFISCGZYCGFDYX7GXKIONZM3

not attested not anchored not stored refs pending

On a model for epidemic spread with interpopulation contact and repellent taxis

Anna Zhigun, Chiganga Samson Ruoja, Christina Surulescu

arxiv:1902.02171 v1 · 2019-02-06 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TZZFISCGZYCGFDYX7GXKIONZM3}

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	2026-05-17T23:54:37.738676Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e72544846ce04628f17f9aea439b966c593a90ff5fe830307d378f5f3481e16

Aliases

arxiv: 1902.02171 · arxiv_version: 1902.02171v1 · doi: 10.48550/arxiv.1902.02171 · pith_short_12: TZZFISCGZYCG · pith_short_16: TZZFISCGZYCGFDYX · pith_short_8: TZZFISCG

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/TZZFISCGZYCGFDYX7GXKIONZM3 \
  | 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: 9e72544846ce04628f17f9aea439b966c593a90ff5fe830307d378f5f3481e16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3d9bafddb2309049ec73b73a2fc8fa012b80b2599d871b1e542fc6dcaf0f42b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-02-06T13:34:31Z",
    "title_canon_sha256": "e4cb529b98a315e41cbaa4cff8da6f6dfa14d3963ca53ec858b5e2997f0d642e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.02171",
    "kind": "arxiv",
    "version": 1
  }
}