Pith Number

pith:RIE3LJZZ

pith:2011:RIE3LJZZ3FIEGHYQTYJ4UCX7A4

not attested not anchored not stored refs pending

Maximizing the Cohesion is NP-hard

Adrien Friggeri (ENS / LIP Laboratoire de l'Informatique du Parall\'elisme / INRIA Grenoble Rh\^one-Alpes, Eric Fleury (ENS / LIP Laboratoire de l'Informatique du Parall\'elisme / INRIA Grenoble Rh\^one-Alpes, IXXI)

arxiv:1109.1994 v2 · 2011-09-09 · cs.NI · 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{RIE3LJZZ3FIEGHYQTYJ4UCX7A4}

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	2026-05-18T04:11:20.078043Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a09b5a739d950431f109e13ca0aff0727ce1953ab059d4629fa4bf2c42ae48f

Aliases

arxiv: 1109.1994 · arxiv_version: 1109.1994v2 · doi: 10.48550/arxiv.1109.1994 · pith_short_12: RIE3LJZZ3FIE · pith_short_16: RIE3LJZZ3FIEGHYQ · pith_short_8: RIE3LJZZ

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/RIE3LJZZ3FIEGHYQTYJ4UCX7A4 \
  | 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: 8a09b5a739d950431f109e13ca0aff0727ce1953ab059d4629fa4bf2c42ae48f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd31efed95a3b7e1c01529be4623fdf49bc3b328f09e0eb5463d8a4be1fbdb6f",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2011-09-09T13:04:05Z",
    "title_canon_sha256": "968eab7d6d5566842464c873e5cb6276e62e1622d3e55ade908434d632e61075"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1994",
    "kind": "arxiv",
    "version": 2
  }
}