Pith Number

pith:KR7TAJXG

pith:2015:KR7TAJXGW4YMAYHP42LKOVHNTY

not attested not anchored not stored refs pending

A Fixed Parameter Tractable Approximation Scheme for the Optimal Cut Graph of a Surface

Arnaud de Mesmay, Vincent Cohen-Addad

arxiv:1507.01688 v1 · 2015-07-07 · cs.DS · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KR7TAJXGW4YMAYHP42LKOVHNTY}

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	2026-05-18T01:37:12.674875Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

547f3026e6b730c060efe696a754ed9e016806f9a831ee99f2c55fdd6680d20c

Aliases

arxiv: 1507.01688 · arxiv_version: 1507.01688v1 · doi: 10.48550/arxiv.1507.01688 · pith_short_12: KR7TAJXGW4YM · pith_short_16: KR7TAJXGW4YMAYHP · pith_short_8: KR7TAJXG

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/KR7TAJXGW4YMAYHP42LKOVHNTY \
  | 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: 547f3026e6b730c060efe696a754ed9e016806f9a831ee99f2c55fdd6680d20c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09fa78be92bfee4f0ef8e88cc790515a1b21996e0fefaaa1d3f85cb14e94ed21",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-07-07T07:12:29Z",
    "title_canon_sha256": "cf3ea211c00a71b589aa0fff640361856e9b998ba7771d297096645e1992f114"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.01688",
    "kind": "arxiv",
    "version": 1
  }
}