Pith Number

pith:RQQP3T6Q

pith:2017:RQQP3T6Q566DFJBCZOPWGNOAYC

not attested not anchored not stored refs pending

Critical Graphs for Minimum Vertex Cover

Andreas Jakoby, Eik List, Naveen Kumar Goswami, Stefan Lucks

arxiv:1705.04111 v2 · 2017-05-11 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RQQP3T6Q566DFJBCZOPWGNOAYC}

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	2026-05-18T00:40:28.405487Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c20fdcfd0efbc32a422cb9f6335c0c09f18b7177107cad4e4ef5d5adbc777c0

Aliases

arxiv: 1705.04111 · arxiv_version: 1705.04111v2 · doi: 10.48550/arxiv.1705.04111 · pith_short_12: RQQP3T6Q566D · pith_short_16: RQQP3T6Q566DFJBC · pith_short_8: RQQP3T6Q

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/RQQP3T6Q566DFJBCZOPWGNOAYC \
  | 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: 8c20fdcfd0efbc32a422cb9f6335c0c09f18b7177107cad4e4ef5d5adbc777c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2061d81e139bb5bf94f6882a8b07c16292879abab0ccbc0fe797c376ce395ef5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-05-11T11:08:08Z",
    "title_canon_sha256": "0fef607f6144baf8a50f41c1a73ccf3875028e0aec38f046f2c004bcda309033"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.04111",
    "kind": "arxiv",
    "version": 2
  }
}