Pith Number

pith:FALV3KZG

pith:2021:FALV3KZGZ4Y3NFJSV4NXMUGZVU

not attested not anchored not stored refs pending

Compound Logics for Modification Problems

Dimitrios M. Thilikos, Fedor V. Fomin, Giannos Stamoulis, Ignasi Sau, Petr A. Golovach

arxiv:2111.02755 v2 · 2021-11-04 · cs.DS · cs.LO · 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{FALV3KZGZ4Y3NFJSV4NXMUGZVU}

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	2026-07-05T05:13:04.611058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28175dab26cf31b69532af1b7650d9ad26bf17e1e189dee7fd34e24d04174882

Aliases

arxiv: 2111.02755 · arxiv_version: 2111.02755v2 · doi: 10.48550/arxiv.2111.02755 · pith_short_12: FALV3KZGZ4Y3 · pith_short_16: FALV3KZGZ4Y3NFJS · pith_short_8: FALV3KZG

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/FALV3KZGZ4Y3NFJSV4NXMUGZVU \
  | 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: 28175dab26cf31b69532af1b7650d9ad26bf17e1e189dee7fd34e24d04174882

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4f2735c021f792c608f52df1955192a27be84586cf4df748fa3bad5d4f5444d",
    "cross_cats_sorted": [
      "cs.LO",
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2021-11-04T11:14:20Z",
    "title_canon_sha256": "06e47a76ec9119d40e14cba8103c1a99b05ae777788bfa389d3c1aabf8fa9d81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.02755",
    "kind": "arxiv",
    "version": 2
  }
}