Pith Number

pith:7UKVAFLC

pith:2018:7UKVAFLCPX5HT5JOGXRAAANEQA

not attested not anchored not stored refs pending

On the Fixed-Parameter Tractability of Some Matching Problems Under the Color-Spanning Model

Binhai Zhu, Feifei Ma, Jian Zhang, Sergey Bereg, Wencheng Wang

arxiv:1805.05448 v1 · 2018-05-14 · 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{7UKVAFLCPX5HT5JOGXRAAANEQA}

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	2026-05-18T00:16:00.606401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd155015627dfa79f52e35e20001a48006b70f7c9fd3df8c08ff2d3d4725c9f4

Aliases

arxiv: 1805.05448 · arxiv_version: 1805.05448v1 · doi: 10.48550/arxiv.1805.05448 · pith_short_12: 7UKVAFLCPX5H · pith_short_16: 7UKVAFLCPX5HT5JO · pith_short_8: 7UKVAFLC

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/7UKVAFLCPX5HT5JOGXRAAANEQA \
  | 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: fd155015627dfa79f52e35e20001a48006b70f7c9fd3df8c08ff2d3d4725c9f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50854c80e753b3b2e99479f9563e025fd56b2cc95b13976686724b284d19702c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-05-14T21:14:18Z",
    "title_canon_sha256": "104c18ba826debda12562097f20c8772532dc4416b25efa0cc08989032fcaf1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.05448",
    "kind": "arxiv",
    "version": 1
  }
}