Pith Number

pith:EBJQQ3RX

pith:2015:EBJQQ3RX5CUQHWVSKHTHOWZEEC

not attested not anchored not stored refs pending

On space efficiency of algorithms working on structural decompositions of graphs

Marcin Wrochna, Micha{\l} Pilipczuk

arxiv:1509.05896 v2 · 2015-09-19 · cs.CC · 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{EBJQQ3RX5CUQHWVSKHTHOWZEEC}

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	2026-05-18T01:15:00.310478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2053086e37e8a903dab251e6775b2420b4858a1c0b69c6e0899dfaaad419e0bb

Aliases

arxiv: 1509.05896 · arxiv_version: 1509.05896v2 · doi: 10.48550/arxiv.1509.05896 · pith_short_12: EBJQQ3RX5CUQ · pith_short_16: EBJQQ3RX5CUQHWVS · pith_short_8: EBJQQ3RX

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/EBJQQ3RX5CUQHWVSKHTHOWZEEC \
  | 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: 2053086e37e8a903dab251e6775b2420b4858a1c0b69c6e0899dfaaad419e0bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2da3c4c546557f589d3403c240e8827f14c4aee6f8fdf56e7333c95ee5746daf",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-09-19T14:20:05Z",
    "title_canon_sha256": "b31e02921cffb2d3c8f89be91f746a546b216e9fec1b807d67c1746e9874c4f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.05896",
    "kind": "arxiv",
    "version": 2
  }
}