Pith Number

pith:PI46YP5C

pith:2014:PI46YP5CQVS64WIUHIXU5DYV34

not attested not anchored not stored refs pending

A 0.821-ratio purely combinatorial algorithm for maximum $k$-vertex cover in bipartite graphs

Bruno Escoffier, Edouard Bonnet, Georgios Stamoulis, Vangelis Paschos

arxiv:1409.6952 v2 · 2014-09-24 · 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{PI46YP5CQVS64WIUHIXU5DYV34}

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	2026-05-18T02:19:36.012103Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a39ec3fa28565ee59143a2f4e8f15df2f51196bbc85a29a55202c8482ceff0e

Aliases

arxiv: 1409.6952 · arxiv_version: 1409.6952v2 · doi: 10.48550/arxiv.1409.6952 · pith_short_12: PI46YP5CQVS6 · pith_short_16: PI46YP5CQVS64WIU · pith_short_8: PI46YP5C

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/PI46YP5CQVS64WIUHIXU5DYV34 \
  | 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: 7a39ec3fa28565ee59143a2f4e8f15df2f51196bbc85a29a55202c8482ceff0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d230342a89659678912619b8fb74f5e7fa9921eb9d52d179f5a24974b12f5cd2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-09-24T13:30:08Z",
    "title_canon_sha256": "d2f0aa05f025064cc561925b5bcf4581de2b79f09be0848bedabfe502216dba5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.6952",
    "kind": "arxiv",
    "version": 2
  }
}