Pith Number

pith:6FGF6NLM

pith:2015:6FGF6NLMWN6HH3A27VZXOXUIIK

not attested not anchored not stored refs pending

Extended Formulation for CSP that is Compact for Instances of Bounded Treewidth

Martin Kouteck\'y, Petr Kolman

arxiv:1502.05361 v2 · 2015-02-18 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6FGF6NLMWN6HH3A27VZXOXUIIK}

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	2026-05-18T02:17:42.416929Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f14c5f356cb37c73ec1afd73775e884292461a1ecf3e6e2f261342a9ea0ef1e6

Aliases

arxiv: 1502.05361 · arxiv_version: 1502.05361v2 · doi: 10.48550/arxiv.1502.05361 · pith_short_12: 6FGF6NLMWN6H · pith_short_16: 6FGF6NLMWN6HH3A2 · pith_short_8: 6FGF6NLM

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/6FGF6NLMWN6HH3A27VZXOXUIIK \
  | 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: f14c5f356cb37c73ec1afd73775e884292461a1ecf3e6e2f261342a9ea0ef1e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c38b2399bbb501758b325de48f37c49cc4b1d79a5c45eba231fa753cf70c33a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-02-18T20:00:10Z",
    "title_canon_sha256": "933d6acad71571f31dcbb2de65f5c6af116ff1b735039b8a69295c70ad53a2ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05361",
    "kind": "arxiv",
    "version": 2
  }
}