Pith Number

pith:FAFB2AG3

pith:2018:FAFB2AG3EDNMDQDEOAFI2ZIFMU

not attested not anchored not stored refs pending

On Graphs whose Eternal Vertex Cover Number and Vertex Cover Number Coincide

Deepak Rajendraprasad, Jasine Babu, J. Nandini Warrier, L. Sunil Chandran, Mathew Francis, Veena Prabhakaran

arxiv:1812.05125 v2 · 2018-12-12 · 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{FAFB2AG3EDNMDQDEOAFI2ZIFMU}

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	2026-05-17T23:47:27.114336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

280a1d00db20dac1c064700a8d6505653d4a02680e2400ee168f6907b5039a1b

Aliases

arxiv: 1812.05125 · arxiv_version: 1812.05125v2 · doi: 10.48550/arxiv.1812.05125 · pith_short_12: FAFB2AG3EDNM · pith_short_16: FAFB2AG3EDNMDQDE · pith_short_8: FAFB2AG3

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/FAFB2AG3EDNMDQDEOAFI2ZIFMU \
  | 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: 280a1d00db20dac1c064700a8d6505653d4a02680e2400ee168f6907b5039a1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f9c5222977cc0636b4974cf044f3c4d44dd7db6ba90d422bebbff75900fbc66",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-12-12T19:11:52Z",
    "title_canon_sha256": "9059c4d199fb043f329bc93c122b2efd6871f1e8112f68f867a52df33201ecf5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.05125",
    "kind": "arxiv",
    "version": 2
  }
}