Pith Number

pith:2HTNCC7U

pith:2010:2HTNCC7UOH7LEUQ4RA4BEGD6UC

not attested not anchored not stored refs pending

Approximation of a Maximum-Submodular-Coverage problem involving spectral functions, with application to Experimental Design

Guillaume Sagnol

arxiv:1007.4152 v2 · 2010-07-23 · math.OC · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2HTNCC7UOH7LEUQ4RA4BEGD6UC}

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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	2026-05-18T04:07:05.448353Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1e6d10bf471feb2521c883812187ea0ad28248537e139482d80a4a6f7f48e88

Aliases

arxiv: 1007.4152 · arxiv_version: 1007.4152v2 · doi: 10.48550/arxiv.1007.4152 · pith_short_12: 2HTNCC7UOH7L · pith_short_16: 2HTNCC7UOH7LEUQ4 · pith_short_8: 2HTNCC7U

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/2HTNCC7UOH7LEUQ4RA4BEGD6UC \
  | 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: d1e6d10bf471feb2521c883812187ea0ad28248537e139482d80a4a6f7f48e88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4b5837b9c84a23e3baf7ee6ce2b28445cc37965602c377df6dc63b02437dec5",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2010-07-23T15:17:57Z",
    "title_canon_sha256": "2070ec3e863268ca8cf38eb9eaff37e8781d732894675bdef60c0d0107ad8d92"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.4152",
    "kind": "arxiv",
    "version": 2
  }
}