Pith Number

pith:5UGLUVVO

pith:2016:5UGLUVVOFF4IO6OQWBLSOORW2W

not attested not anchored not stored refs pending

Approximation algorithms for the maximum weight internal spanning tree problem

Dan Wang, Guohui Lin, Lusheng Wang, Yong Chen, Zhi-Zhong Chen

arxiv:1608.03299 v2 · 2016-08-10 · 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{5UGLUVVOFF4IO6OQWBLSOORW2W}

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	2026-05-18T00:43:35.697566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed0cba56ae29788779d0b057273a36d5bc0ac004ee96bd4e6793c56592677e47

Aliases

arxiv: 1608.03299 · arxiv_version: 1608.03299v2 · doi: 10.48550/arxiv.1608.03299 · pith_short_12: 5UGLUVVOFF4I · pith_short_16: 5UGLUVVOFF4IO6OQ · pith_short_8: 5UGLUVVO

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/5UGLUVVOFF4IO6OQWBLSOORW2W \
  | 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: ed0cba56ae29788779d0b057273a36d5bc0ac004ee96bd4e6793c56592677e47

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13811d30f02912a54f261001ca231a7e0a0d6e747f5abc6c57bef1fad4e11e05",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-08-10T20:43:39Z",
    "title_canon_sha256": "37172a3c683fc954d68af2ed4c8a6a70947538eb89334d479a6702db145d2c07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.03299",
    "kind": "arxiv",
    "version": 2
  }
}