Pith Number

pith:BGUOY4NY

pith:2013:BGUOY4NYJU6E4LCAYLZPYBTUVF

not attested not anchored not stored refs pending

The power of linear programming for general-valued CSPs

Johan Thapper, Stanislav Zivny, Vladimir Kolmogorov

arxiv:1311.4219 v3 · 2013-11-17 · 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{BGUOY4NYJU6E4LCAYLZPYBTUVF}

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	2026-05-18T01:26:19.099394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09a8ec71b84d3c4e2c40c2f2fc0674a9427866b4148abacaa311f76e130863c7

Aliases

arxiv: 1311.4219 · arxiv_version: 1311.4219v3 · doi: 10.48550/arxiv.1311.4219 · pith_short_12: BGUOY4NYJU6E · pith_short_16: BGUOY4NYJU6E4LCA · pith_short_8: BGUOY4NY

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/BGUOY4NYJU6E4LCAYLZPYBTUVF \
  | 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: 09a8ec71b84d3c4e2c40c2f2fc0674a9427866b4148abacaa311f76e130863c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c25068b27f2dd11f9958264e6ee5ac52e4b9fa528c39185cbae26b3e1b8e96b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-11-17T21:37:51Z",
    "title_canon_sha256": "cc704fa25c2b34a7d15f309f7bc55fb6ee2740f07a1b5c10f292249adfa428ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4219",
    "kind": "arxiv",
    "version": 3
  }
}