Pith Number

pith:AFUBN37F

pith:2014:AFUBN37FI2UPPS5U23XJFVTUZ4

not attested not anchored not stored refs pending

Complexity of the General Chromatic Art Gallery Problem

Michael Hemmer, S\'andor P. Fekete, Stephan Friedrichs

arxiv:1403.2972 v1 · 2014-03-12 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AFUBN37FI2UPPS5U23XJFVTUZ4}

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	2026-05-18T02:56:33.488147Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

016816efe546a8f7cbb4d6ee92d674cf2fd423e67b52a696081f4e5a90e83c29

Aliases

arxiv: 1403.2972 · arxiv_version: 1403.2972v1 · doi: 10.48550/arxiv.1403.2972 · pith_short_12: AFUBN37FI2UP · pith_short_16: AFUBN37FI2UPPS5U · pith_short_8: AFUBN37F

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/AFUBN37FI2UPPS5U23XJFVTUZ4 \
  | 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: 016816efe546a8f7cbb4d6ee92d674cf2fd423e67b52a696081f4e5a90e83c29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab68ce88f040ebb00c0399e8b64078412580ea506b4d689217691f581b97696d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2014-03-12T15:27:53Z",
    "title_canon_sha256": "f5c46440ab69e80edffd38653b8720963ab9e8e932fb2ccb923e56e71eab4ea1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.2972",
    "kind": "arxiv",
    "version": 1
  }
}