Pith Number

pith:F2BHZD5R

pith:2013:F2BHZD5RJLWHNUHRUQ5CP3YORD

not attested not anchored not stored refs pending

Parameterized (in)approximability of subset problems

Edouard Bonnet, Vangelis Th. Paschos

arxiv:1310.5576 v1 · 2013-10-21 · 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{F2BHZD5RJLWHNUHRUQ5CP3YORD}

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	2026-05-18T03:09:34.884804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e827c8fb14aec76d0f1a43a27ef0e88e1c88807f8c44faf006a3ede7d3db5f5

Aliases

arxiv: 1310.5576 · arxiv_version: 1310.5576v1 · doi: 10.48550/arxiv.1310.5576 · pith_short_12: F2BHZD5RJLWH · pith_short_16: F2BHZD5RJLWHNUHR · pith_short_8: F2BHZD5R

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/F2BHZD5RJLWHNUHRUQ5CP3YORD \
  | 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: 2e827c8fb14aec76d0f1a43a27ef0e88e1c88807f8c44faf006a3ede7d3db5f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a9bc31da8a5b5c04b29b23cad6306da4aef85766ed980710a9f7c3f1183f383",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-10-21T14:46:23Z",
    "title_canon_sha256": "f436daa123b4a866407e57796f3a9e0885f96d8f993588f7d7016c84147234d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.5576",
    "kind": "arxiv",
    "version": 1
  }
}