Pith Number

pith:QQ5ZHNRX

pith:2018:QQ5ZHNRXNVBKPZYG5TRPDT4BXC

not attested not anchored not stored refs pending

On the existence and uniqueness of an inverse problem in epidemiology

An\'ibal Coronel, Ian Hess, Luis Friz, Mar\'ia Zegarra

arxiv:1811.02892 v1 · 2018-11-07 · 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{QQ5ZHNRXNVBKPZYG5TRPDT4BXC}

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	2026-05-18T00:01:20.499912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

843b93b6376d42a7e706ece2f1cf81b8ab9a15d45870eb4bca47dafbf350bddb

Aliases

arxiv: 1811.02892 · arxiv_version: 1811.02892v1 · doi: 10.48550/arxiv.1811.02892 · pith_short_12: QQ5ZHNRXNVBK · pith_short_16: QQ5ZHNRXNVBKPZYG · pith_short_8: QQ5ZHNRX

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/QQ5ZHNRXNVBKPZYG5TRPDT4BXC \
  | 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: 843b93b6376d42a7e706ece2f1cf81b8ab9a15d45870eb4bca47dafbf350bddb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30dae668a4ea9268862ca9b8e98101cc8699b3438c5042a23a52544db9dd8eb7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-11-07T13:59:56Z",
    "title_canon_sha256": "9beac32452a7a9213cc84c6bf670287adcd11aa4a1edd76bb9adaf5f4628f76c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.02892",
    "kind": "arxiv",
    "version": 1
  }
}