Pith Number

pith:IDP2P72D

pith:2016:IDP2P72DBACBCK3KYDV6Y6A3DJ

not attested not anchored not stored refs pending

A Linear Time Parameterized Algorithm for Node Unique Label Cover

Daniel Lokshtanov, M. S. Ramanujan, Saket Saurabh

arxiv:1604.08764 v1 · 2016-04-29 · 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{IDP2P72DBACBCK3KYDV6Y6A3DJ}

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	2026-05-18T01:16:01.856954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40dfa7ff430804112b6ac0ebec781b1a79e1f392b05ac05fcda39d0089dad208

Aliases

arxiv: 1604.08764 · arxiv_version: 1604.08764v1 · doi: 10.48550/arxiv.1604.08764 · pith_short_12: IDP2P72DBACB · pith_short_16: IDP2P72DBACBCK3K · pith_short_8: IDP2P72D

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/IDP2P72DBACBCK3KYDV6Y6A3DJ \
  | 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: 40dfa7ff430804112b6ac0ebec781b1a79e1f392b05ac05fcda39d0089dad208

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "105f8d1cac22234fdf5f6ffb3efb7b0a3551caf15747a7a1aabdcc84a6c9ca6e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-04-29T10:22:11Z",
    "title_canon_sha256": "c2538f388e6f68b70381e357a8065b5961c660afa12f63f815fdedb978746cd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.08764",
    "kind": "arxiv",
    "version": 1
  }
}