Pith Number

pith:W5LSQ6JR

pith:2019:W5LSQ6JRKELL3WCHW3PRTQN2SN

not attested not anchored not stored refs pending

Exact and approximation algorithms for the expanding search problem

Ben Hermans, Jannik Matuschke, Roel Leus

arxiv:1911.08959 v1 · 2019-11-20 · cs.DM · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W5LSQ6JRKELL3WCHW3PRTQN2SN}

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	2026-07-05T00:20:47.314167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7572879315116bdd847b6df19c1ba93757da15cd7abd31642f174c2ccedef00

Aliases

arxiv: 1911.08959 · arxiv_version: 1911.08959v1 · doi: 10.48550/arxiv.1911.08959 · pith_short_12: W5LSQ6JRKELL · pith_short_16: W5LSQ6JRKELL3WCH · pith_short_8: W5LSQ6JR

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/W5LSQ6JRKELL3WCHW3PRTQN2SN \
  | 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: b7572879315116bdd847b6df19c1ba93757da15cd7abd31642f174c2ccedef00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ab1ac27afad2eb273ba98885bc190ff06c916fdefde00eef8ddba36ebb9236e",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2019-11-20T15:18:24Z",
    "title_canon_sha256": "e483f20866dc8283154601c4db62a8c1856b5b04c6ce1645e300c444ec2e2948"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.08959",
    "kind": "arxiv",
    "version": 1
  }
}