Pith Number

pith:4XSLD536

pith:2018:4XSLD536ZYKJGYUMXPAA4BT5EO

not attested not anchored not stored refs pending

The Best-or-Worst and the Postdoc problems with random number of candidates

J.M. Grau, L. Bayon, M.A. Oller-Marcen, M.M Ruiz, P. Fortuny

arxiv:1809.06390 v2 · 2018-09-17 · math.PR · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4XSLD536ZYKJGYUMXPAA4BT5EO}

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	2026-05-18T00:01:06.777061Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5e4b1f77ece1493628cbbc00e067d239da9736d1501742b50b8d27c7db7445f

Aliases

arxiv: 1809.06390 · arxiv_version: 1809.06390v2 · doi: 10.48550/arxiv.1809.06390 · pith_short_12: 4XSLD536ZYKJ · pith_short_16: 4XSLD536ZYKJGYUM · pith_short_8: 4XSLD536

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/4XSLD536ZYKJGYUMXPAA4BT5EO \
  | 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: e5e4b1f77ece1493628cbbc00e067d239da9736d1501742b50b8d27c7db7445f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ecf9bca21fbf7632d8e815f30d8f4b08e3bb6b85e7c1f9f6301d8769d290e63",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2018-09-17T18:06:08Z",
    "title_canon_sha256": "44089cc4a383a81d03a490836d8b88af93dd300324bf23ec6f5d779a87d6c0a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.06390",
    "kind": "arxiv",
    "version": 2
  }
}