Pith Number

pith:6RB76YDF

pith:2018:6RB76YDFDXGGZILI73TXX2FM5I

not attested not anchored not stored refs pending

Exact Algorithms for the Maximum Planar Subgraph Problem: New Models and Experiments

Ivo Hedtke, Markus Chimani, Tilo Wiedera

arxiv:1804.07143 v1 · 2018-04-19 · 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{6RB76YDFDXGGZILI73TXX2FM5I}

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	2026-05-18T00:18:01.313600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f443ff60651dcc6ca168fee77be8acea22506e50c7530cbd0905cabe87536d85

Aliases

arxiv: 1804.07143 · arxiv_version: 1804.07143v1 · doi: 10.48550/arxiv.1804.07143 · pith_short_12: 6RB76YDFDXGG · pith_short_16: 6RB76YDFDXGGZILI · pith_short_8: 6RB76YDF

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/6RB76YDFDXGGZILI73TXX2FM5I \
  | 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: f443ff60651dcc6ca168fee77be8acea22506e50c7530cbd0905cabe87536d85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ba539ed7b5d22045fcc73acce8328f5855f1c87a8b81ad7304da3be3ac7a41e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-04-19T13:19:11Z",
    "title_canon_sha256": "dff3840721bf8abadf497ee7856189da9c48f246e99d0b616348b4bac910902d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07143",
    "kind": "arxiv",
    "version": 1
  }
}