Pith Number

pith:QBZI6KX5

pith:2014:QBZI6KX5A77YS3IZYGQRB3FDTW

not attested not anchored not stored refs pending

An LP-Rounding $2\sqrt{2}$ Approximation for Restricted Maximum Acyclic Subgraph

Fabrizio Grandoni, Micha{\l} W{\l}odarczyk, Tomasz Kociumaka

arxiv:1405.0456 v1 · 2014-05-02 · 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{QBZI6KX5A77YS3IZYGQRB3FDTW}

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	2026-05-18T02:52:42.605555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80728f2afd07ff896d19c1a110eca39d822459f3a250f3bf718e43660ef79a9f

Aliases

arxiv: 1405.0456 · arxiv_version: 1405.0456v1 · doi: 10.48550/arxiv.1405.0456 · pith_short_12: QBZI6KX5A77Y · pith_short_16: QBZI6KX5A77YS3IZ · pith_short_8: QBZI6KX5

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/QBZI6KX5A77YS3IZYGQRB3FDTW \
  | 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: 80728f2afd07ff896d19c1a110eca39d822459f3a250f3bf718e43660ef79a9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f59e80bba41348a9d53c759c18e2a5265eac6fb3dc5d3187cd68be7c27f0924a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-05-02T17:18:53Z",
    "title_canon_sha256": "ab6c063e013b508ac778d56f45fddaef37b29c6c80ff86ffa785891e153068b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.0456",
    "kind": "arxiv",
    "version": 1
  }
}