Pith Number

pith:CJH6PG7V

pith:2018:CJH6PG7VCINCXKIAA6KK6L23MV

not attested not anchored not stored refs pending

Quasi-polynomial time approximation schemes for packing and covering problems in planar graphs

Andreas Wiese, Erik Jan van Leeuwen, Micha{\l} Pilipczuk

arxiv:1807.07626 v1 · 2018-07-19 · 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{CJH6PG7VCINCXKIAA6KK6L23MV}

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	2026-05-18T00:10:16.067944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

124fe79bf5121a2ba9000794af2f5b654a98fcedff8be52c3a827f8c02d183e0

Aliases

arxiv: 1807.07626 · arxiv_version: 1807.07626v1 · doi: 10.48550/arxiv.1807.07626 · pith_short_12: CJH6PG7VCINC · pith_short_16: CJH6PG7VCINCXKIA · pith_short_8: CJH6PG7V

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/CJH6PG7VCINCXKIAA6KK6L23MV \
  | 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: 124fe79bf5121a2ba9000794af2f5b654a98fcedff8be52c3a827f8c02d183e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88140f23b15bc924987b65afac8004bcb740d0cfa37779981436b34eb455ba1a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-07-19T20:00:44Z",
    "title_canon_sha256": "6fa2a03c991dde4e18893c6243527e700628c4a8fc325c3498ba4e6d492ff508"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07626",
    "kind": "arxiv",
    "version": 1
  }
}