Pith Number

pith:VWH5DZ3D

pith:2013:VWH5DZ3DMGNOE3PSBAGQXYYOK6

not attested not anchored not stored refs pending

An LMP O(log n)-Approximation Algorithm for Node Weighted Prize Collecting Steiner Tree

Jochen K\"onemann, Laura Sanit\`a, Sina Sadeghian

arxiv:1302.2127 v3 · 2013-02-08 · 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{VWH5DZ3DMGNOE3PSBAGQXYYOK6}

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	2026-05-18T03:28:29.003662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad8fd1e763619ae26df2080d0be30e57a9c0a25bf73fc69844ac420c20dacfec

Aliases

arxiv: 1302.2127 · arxiv_version: 1302.2127v3 · doi: 10.48550/arxiv.1302.2127 · pith_short_12: VWH5DZ3DMGNO · pith_short_16: VWH5DZ3DMGNOE3PS · pith_short_8: VWH5DZ3D

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/VWH5DZ3DMGNOE3PSBAGQXYYOK6 \
  | 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: ad8fd1e763619ae26df2080d0be30e57a9c0a25bf73fc69844ac420c20dacfec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12d27bb09bc865e4d01316354fc2f322d06d85dde3ce95ae8a15f65482b48dda",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-02-08T19:41:06Z",
    "title_canon_sha256": "458ceabca3d544d904262101cfce4a6df34ea51beaa473db02a098d9dd5c76ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2127",
    "kind": "arxiv",
    "version": 3
  }
}