Pith Number

pith:KP2J2OVB

pith:2018:KP2J2OVBTDAAAD265YIYZ4TZXU

not attested not anchored not stored refs pending

Weighted vertex cover on graphs with maximum degree 3

Dekel Tsur

arxiv:1810.12982 v1 · 2018-10-30 · 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{KP2J2OVBTDAAAD265YIYZ4TZXU}

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	2026-05-18T00:01:52.539338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53f49d3aa198c0000f5eee118cf279bd2ad3790029fc8ee32aba9ad83d849cf6

Aliases

arxiv: 1810.12982 · arxiv_version: 1810.12982v1 · doi: 10.48550/arxiv.1810.12982 · pith_short_12: KP2J2OVBTDAA · pith_short_16: KP2J2OVBTDAAAD26 · pith_short_8: KP2J2OVB

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/KP2J2OVBTDAAAD265YIYZ4TZXU \
  | 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: 53f49d3aa198c0000f5eee118cf279bd2ad3790029fc8ee32aba9ad83d849cf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e5c2b9aca1b6843b38b533a17db4e5a6d81eca4fcca67d5c57f5275920007dc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-10-30T19:53:03Z",
    "title_canon_sha256": "c361afb5253bd7332f1d4c741b55f19e8c8dd396fbe9551f31e7eb1e5b9482bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.12982",
    "kind": "arxiv",
    "version": 1
  }
}