Pith Number

pith:CX4SDXDD

pith:2013:CX4SDXDDSPOUOPM55PATFNISZQ

not attested not anchored not stored refs pending

Fixed Parameter Inapproximability for Clique and SetCover in Time Super-exponential in OPT

Guy Kortsarz, Mohammad T. Hajiaghayi, Rohit Khandekar

arxiv:1310.2711 v2 · 2013-10-10 · cs.CC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CX4SDXDDSPOUOPM55PATFNISZQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:05:27.839533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15f921dc6393dd473d9debc132b512cc1111943eab08a5b3f401a8585d0c0547

Aliases

arxiv: 1310.2711 · arxiv_version: 1310.2711v2 · doi: 10.48550/arxiv.1310.2711 · pith_short_12: CX4SDXDDSPOU · pith_short_16: CX4SDXDDSPOUOPM5 · pith_short_8: CX4SDXDD

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/CX4SDXDDSPOUOPM55PATFNISZQ \
  | 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: 15f921dc6393dd473d9debc132b512cc1111943eab08a5b3f401a8585d0c0547

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a058d7c73c85268bee39f6fb225660933ac27348ffe2bbc02b212c8287d388e3",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-10-10T06:08:03Z",
    "title_canon_sha256": "2251ffb91b3621d6dd01c147a7256467f69df1a101b742d482d8922e02e61a8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2711",
    "kind": "arxiv",
    "version": 2
  }
}