Pith Number

pith:ZHH7UJB4

pith:2012:ZHH7UJB4JBPJY4HQDTKFIRINJ4

not attested not anchored not stored refs pending

The covert set-cover problem with application to Network Discovery

Sandeep Sen, V. N. Muralidhara

arxiv:1202.1090 v1 · 2012-02-06 · 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{ZHH7UJB4JBPJY4HQDTKFIRINJ4}

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	2026-05-18T02:21:18.074734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9cffa243c485e9c70f01cd454450d4f033590ec1a845c6c612085a625aca3b1

Aliases

arxiv: 1202.1090 · arxiv_version: 1202.1090v1 · doi: 10.48550/arxiv.1202.1090 · pith_short_12: ZHH7UJB4JBPJ · pith_short_16: ZHH7UJB4JBPJY4HQ · pith_short_8: ZHH7UJB4

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/ZHH7UJB4JBPJY4HQDTKFIRINJ4 \
  | 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: c9cffa243c485e9c70f01cd454450d4f033590ec1a845c6c612085a625aca3b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5d0584f5454e4849a7b125ac36b159e0d5c6eff3db9a0b8b5e43adc0a01efe7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-02-06T10:14:24Z",
    "title_canon_sha256": "59fc7c3cb9e2e272a18a0b5547ac381efee34d73395c3e96c87058e9dd78bc4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1090",
    "kind": "arxiv",
    "version": 1
  }
}