Pith Number

pith:54NVR423

pith:2015:54NVR423KMZ6ZGZCILOCF2O6QY

not attested not anchored not stored refs pending

Discovering Archipelagos of Tractability for Constraint Satisfaction and Counting

M. S. Ramanujan, Robert Ganian, Stefan Szeider

arxiv:1507.02479 v2 · 2015-07-09 · 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{54NVR423KMZ6ZGZCILOCF2O6QY}

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	2026-05-18T01:36:37.747415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef1b58f35b5333ec9b2242dc22e9de862287d94e546850f6fc8f5010cf402d82

Aliases

arxiv: 1507.02479 · arxiv_version: 1507.02479v2 · doi: 10.48550/arxiv.1507.02479 · pith_short_12: 54NVR423KMZ6 · pith_short_16: 54NVR423KMZ6ZGZC · pith_short_8: 54NVR423

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/54NVR423KMZ6ZGZCILOCF2O6QY \
  | 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: ef1b58f35b5333ec9b2242dc22e9de862287d94e546850f6fc8f5010cf402d82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3938672f3809b943f142cbf152cee20377001d3d5b1a1011e1cd82a50ea16f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-07-09T12:25:49Z",
    "title_canon_sha256": "26706195c7bfae293d35b7d3c478fa0c188a0c3d793190df9b6c7ed4128fb7e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.02479",
    "kind": "arxiv",
    "version": 2
  }
}