Pith Number

pith:ULFRAZVJ

pith:2009:ULFRAZVJYTU22W5YGURYT5HO4Q

not attested not anchored not stored refs pending

Recovering the time-dependent transmission rate from infection data via solution of an inverse ODE problem

Hao Wang, Howie Weiss, Mark Pollicott

arxiv:0907.3529 v4 · 2009-07-21 · q-bio.QM · math.DS · 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{ULFRAZVJYTU22W5YGURYT5HO4Q}

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	2026-05-18T04:19:54.885155Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2cb1066a9c4e9ad5bb8352389f4eee42e99c336584165bec947872c5a8a8cd4

Aliases

arxiv: 0907.3529 · arxiv_version: 0907.3529v4 · doi: 10.48550/arxiv.0907.3529 · pith_short_12: ULFRAZVJYTU2 · pith_short_16: ULFRAZVJYTU22W5Y · pith_short_8: ULFRAZVJ

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/ULFRAZVJYTU22W5YGURYT5HO4Q \
  | 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: a2cb1066a9c4e9ad5bb8352389f4eee42e99c336584165bec947872c5a8a8cd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09672c15e0321611bb18363c87fa527d22f97a6ac5c98e04df65e95bde67ec52",
    "cross_cats_sorted": [
      "math.DS",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2009-07-21T02:45:59Z",
    "title_canon_sha256": "b11e0ad13bfa18be90f307af01cdc13112a940574276e098a414f6772e00b415"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3529",
    "kind": "arxiv",
    "version": 4
  }
}