Pith Number

pith:Q7EPV2C6

pith:2013:Q7EPV2C6PXFOXMND7TDTTE4J4G

not attested not anchored not stored refs pending

Half-integrality, LP-branching and FPT Algorithms

Magnus Wahlstr\"om, Yoichi Iwata, Yuichi Yoshida

arxiv:1310.2841 v2 · 2013-10-10 · 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{Q7EPV2C6PXFOXMND7TDTTE4J4G}

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	2026-05-18T02:50:00.761099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87c8fae85e7dcaebb1a3fcc7399389e190f035484f4ba1e82c2f0a2bab518621

Aliases

arxiv: 1310.2841 · arxiv_version: 1310.2841v2 · doi: 10.48550/arxiv.1310.2841 · pith_short_12: Q7EPV2C6PXFO · pith_short_16: Q7EPV2C6PXFOXMND · pith_short_8: Q7EPV2C6

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/Q7EPV2C6PXFOXMND7TDTTE4J4G \
  | 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: 87c8fae85e7dcaebb1a3fcc7399389e190f035484f4ba1e82c2f0a2bab518621

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "710060c474711e65db5656e3220f62621ea78e82c4d3819e0fb37fbe947cadd1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-10-10T14:49:10Z",
    "title_canon_sha256": "53b97da665659b9d63995c5222ffd66ab9be0f562d01dd9d372190f05b12d5f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2841",
    "kind": "arxiv",
    "version": 2
  }
}