Pith Number

pith:ZU3INAIF

pith:2016:ZU3INAIF4OHVJTYEE3OWJSA5VM

not attested not anchored not stored refs pending

Approximation Algorithm for N-distance Minimal Vertex Cover Problem

Koustav Sadhukhan, Rao Arvind Mallari, Tarun Yadav

arxiv:1606.02889 v1 · 2016-06-09 · cs.DS · 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{ZU3INAIF4OHVJTYEE3OWJSA5VM}

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	2026-05-18T01:12:39.800286Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd36868105e38f54cf0426dd64c81dab2a9f398febeed9dbdfae96430ad01fad

Aliases

arxiv: 1606.02889 · arxiv_version: 1606.02889v1 · doi: 10.48550/arxiv.1606.02889 · pith_short_12: ZU3INAIF4OHV · pith_short_16: ZU3INAIF4OHVJTYE · pith_short_8: ZU3INAIF

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/ZU3INAIF4OHVJTYEE3OWJSA5VM \
  | 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: cd36868105e38f54cf0426dd64c81dab2a9f398febeed9dbdfae96430ad01fad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2cb5856bb343d398553b6cb90075f5ba82063bdf1036465ec241aa1b5a14e70",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-06-09T09:58:17Z",
    "title_canon_sha256": "0ae17e9430af9def22ae06d2e4cb0d7ecdf1fe5461ed14c43c951afe2d2fdf80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.02889",
    "kind": "arxiv",
    "version": 1
  }
}