Pith Number

pith:UWX4RPCK

pith:2011:UWX4RPCKX345LSSJMXOLJY33HE

not attested not anchored not stored refs pending

On the Approximability and Hardness of Minimum Topic Connected Overlay and Its Special Instances

Horotaka Ono, Jun Hosoda, Juraj Hromkovic, Koichi Wada, Monika Steinova, Taisuke Izumi

arxiv:1107.2443 v1 · 2011-07-13 · cs.DS · cs.DC · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UWX4RPCKX345LSSJMXOLJY33HE}

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	2026-05-18T00:56:57.795592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5afc8bc4abef9d5ca4965dcb4e37b39076a97b19094d134e4cad9e828546b12

Aliases

arxiv: 1107.2443 · arxiv_version: 1107.2443v1 · doi: 10.48550/arxiv.1107.2443 · pith_short_12: UWX4RPCKX345 · pith_short_16: UWX4RPCKX345LSSJ · pith_short_8: UWX4RPCK

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/UWX4RPCKX345LSSJMXOLJY33HE \
  | 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: a5afc8bc4abef9d5ca4965dcb4e37b39076a97b19094d134e4cad9e828546b12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ce79aa86a63fce91e9f65f54e479d07b4ffac2b8a7e1cf03b47258514608ed0",
    "cross_cats_sorted": [
      "cs.DC",
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-07-13T00:51:53Z",
    "title_canon_sha256": "577b3f5e58a7d6680a329a9be9a7f7758e7ffa8db2bcf8f1f78c9b08e5475002"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.2443",
    "kind": "arxiv",
    "version": 1
  }
}