Pith Number

pith:G3VUY6MJ

pith:2019:G3VUY6MJM5QMO5LDBEHRO7ZM2Y

not attested not anchored not stored refs pending

Optimal excess-of-loss reinsurance for stochastic factor risk models

Claudia Ceci, Matteo Brachetta

arxiv:1904.05422 v1 · 2019-04-10 · q-fin.MF · math.OC · q-fin.RM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G3VUY6MJM5QMO5LDBEHRO7ZM2Y}

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	2026-05-17T23:48:49.575461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

36eb4c79896760c77563090f177f2cd623f802bd4ea670658a7dde668a03dd72

Aliases

arxiv: 1904.05422 · arxiv_version: 1904.05422v1 · doi: 10.48550/arxiv.1904.05422 · pith_short_12: G3VUY6MJM5QM · pith_short_16: G3VUY6MJM5QMO5LD · pith_short_8: G3VUY6MJ

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/G3VUY6MJM5QMO5LDBEHRO7ZM2Y \
  | 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: 36eb4c79896760c77563090f177f2cd623f802bd4ea670658a7dde668a03dd72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f345a5fc3374187a6198745440d69685dad607da90d55a77a126983eb4a5262",
    "cross_cats_sorted": [
      "math.OC",
      "q-fin.RM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.MF",
    "submitted_at": "2019-04-10T20:11:50Z",
    "title_canon_sha256": "6fef03aa47d2ddbc0419989f7c89e7d99dad0833ab7b0e27951a9a39249cfb2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.05422",
    "kind": "arxiv",
    "version": 1
  }
}