Pith Number

pith:4F27E3WE

pith:2014:4F27E3WEV2MNBVHGZV4WF2HHA6

not attested not anchored not stored refs pending

L(2,1)-labelling of Circular-arc Graph

Anita Pal, Madhumangal Pal, Satyabrata Paul

arxiv:1407.5488 v1 · 2014-07-21 · 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{4F27E3WEV2MNBVHGZV4WF2HHA6}

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	2026-05-18T02:47:13.924307Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e175f26ec4ae98d0d4e6cd7962e8e70799502a7e34c3fb89fbc73e987b678940

Aliases

arxiv: 1407.5488 · arxiv_version: 1407.5488v1 · doi: 10.48550/arxiv.1407.5488 · pith_short_12: 4F27E3WEV2MN · pith_short_16: 4F27E3WEV2MNBVHG · pith_short_8: 4F27E3WE

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/4F27E3WEV2MNBVHGZV4WF2HHA6 \
  | 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: e175f26ec4ae98d0d4e6cd7962e8e70799502a7e34c3fb89fbc73e987b678940

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77a70e66363094d40959e2215a86e010209d5748c81387109012f2dee60ab15d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2014-07-21T13:26:54Z",
    "title_canon_sha256": "a4e1a319239f83536f1612b3dd5c93089c450b8c12ae31332f4c73cf7a10183d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.5488",
    "kind": "arxiv",
    "version": 1
  }
}