Pith Number

pith:DODKZT7W

pith:2018:DODKZT7WGRDWSDABCQXCL4TT26

not attested not anchored not stored refs pending

Approximation algorithms on $k-$ cycle covering and $k-$ clique covering

Zhongzheng Tang, Zhuo Diao

arxiv:1807.06867 v1 · 2018-07-18 · cs.DM · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DODKZT7WGRDWSDABCQXCL4TT26}

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	2026-05-18T00:10:25.505913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b86accff63447690c01142e25f273d7b8a569ccecca8b5ff50d5b64eb09abe9

Aliases

arxiv: 1807.06867 · arxiv_version: 1807.06867v1 · doi: 10.48550/arxiv.1807.06867 · pith_short_12: DODKZT7WGRDW · pith_short_16: DODKZT7WGRDWSDAB · pith_short_8: DODKZT7W

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/DODKZT7WGRDWSDABCQXCL4TT26 \
  | 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: 1b86accff63447690c01142e25f273d7b8a569ccecca8b5ff50d5b64eb09abe9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bab9c552f0757c45f0ea882813f6648fe0ce090eb35cce1f188771364fd0e0c9",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-07-18T11:15:35Z",
    "title_canon_sha256": "21ef8a43e08fd1cab6764134322b75e890236ca84b85afe738d8168caa4eabd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06867",
    "kind": "arxiv",
    "version": 1
  }
}