Pith Number

pith:RBPNOSKU

pith:2018:RBPNOSKUAI7HRZTQJC37BGLIPZ

not attested not anchored not stored refs pending

Local Search is a PTAS for Feedback Vertex Set in Minor-free Graphs

Baigong Zheng, Hung Le

arxiv:1804.06428 v2 · 2018-04-17 · 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{RBPNOSKUAI7HRZTQJC37BGLIPZ}

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	2026-05-17T23:44:32.580958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

885ed74954023e78e67048b7f099687e7f34f9271e6da3eb4e3f7b9f823e89e9

Aliases

arxiv: 1804.06428 · arxiv_version: 1804.06428v2 · doi: 10.48550/arxiv.1804.06428 · pith_short_12: RBPNOSKUAI7H · pith_short_16: RBPNOSKUAI7HRZTQ · pith_short_8: RBPNOSKU

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/RBPNOSKUAI7HRZTQJC37BGLIPZ \
  | 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: 885ed74954023e78e67048b7f099687e7f34f9271e6da3eb4e3f7b9f823e89e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e4e59743008d3ce99d73a6b700b7f00689aef65fe9402a8a628e1a8b3f01c67",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-04-17T18:39:33Z",
    "title_canon_sha256": "ce546c176fa7da77fa33ba4bf21de6800315a7de02f21fa0850a533bdab41e1d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.06428",
    "kind": "arxiv",
    "version": 2
  }
}