Pith Number

pith:DCPYQ2CT

pith:2010:DCPYQ2CTCRLUJNE74OYXCLP32J

not attested not anchored not stored refs pending

Approximating Vertex Cover in Dense Hypergraphs

Claus Viehmann, Jean Cardinal, Marek Karpinski, Richard Schmied

arxiv:1012.2573 v1 · 2010-12-12 · 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{DCPYQ2CTCRLUJNE74OYXCLP32J}

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	2026-05-18T04:33:28.301862Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

189f886853145744b49fe3b1712dfbd27c0e2e740fea2c2d9a1a7ff4ea0f588c

Aliases

arxiv: 1012.2573 · arxiv_version: 1012.2573v1 · doi: 10.48550/arxiv.1012.2573 · pith_short_12: DCPYQ2CTCRLU · pith_short_16: DCPYQ2CTCRLUJNE7 · pith_short_8: DCPYQ2CT

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/DCPYQ2CTCRLUJNE74OYXCLP32J \
  | 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: 189f886853145744b49fe3b1712dfbd27c0e2e740fea2c2d9a1a7ff4ea0f588c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0cf98a3cc19b758667e06f6f89d27785adf33892266a2126d5a10df4e038304d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2010-12-12T18:47:05Z",
    "title_canon_sha256": "24d1b203b850089d2bbf681a5b4746bd623c2747b2ac17055395bb08b4ffd945"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.2573",
    "kind": "arxiv",
    "version": 1
  }
}