Pith Number

pith:3NBPBCKC

pith:2013:3NBPBCKCXAQRCPKPZN7DOHRDWY

not attested not anchored not stored refs pending

On Partial Vertex Cover on Bipartite Graphs and Trees

Bugra Caskurlu, K. Subramani

arxiv:1304.5934 v1 · 2013-04-22 · cs.CC · 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{3NBPBCKCXAQRCPKPZN7DOHRDWY}

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	2026-05-18T03:27:23.730991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db42f08942b821113d4fcb7e371e23b62ecbd442e4981024ff279319be66d48e

Aliases

arxiv: 1304.5934 · arxiv_version: 1304.5934v1 · doi: 10.48550/arxiv.1304.5934 · pith_short_12: 3NBPBCKCXAQR · pith_short_16: 3NBPBCKCXAQRCPKP · pith_short_8: 3NBPBCKC

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/3NBPBCKCXAQRCPKPZN7DOHRDWY \
  | 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: db42f08942b821113d4fcb7e371e23b62ecbd442e4981024ff279319be66d48e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "771d8ed70e97beb9a36927f678e3edb6a0019388bb5650668c024878236e8c6d",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-04-22T12:59:20Z",
    "title_canon_sha256": "34cf31d8dd1edd45f7daeb9150c6d85d6ca5ec79a6e562bc8f57598c94b91461"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5934",
    "kind": "arxiv",
    "version": 1
  }
}