Pith Number

pith:SA6JIRBG

pith:2015:SA6JIRBG26DLREGVNBE5LM6NCM

not attested not anchored not stored refs pending

Coloring points with respect to squares

Bal\'azs Keszegh, Eyal Ackerman, M\'at\'e Vizer

arxiv:1512.01953 v2 · 2015-12-07 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SA6JIRBG26DLREGVNBE5LM6NCM}

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	2026-05-18T00:42:35.336847Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

903c944426d786b890d56849d5b3cd1324638ea138b29fb007db65d28e586c1e

Aliases

arxiv: 1512.01953 · arxiv_version: 1512.01953v2 · doi: 10.48550/arxiv.1512.01953 · pith_short_12: SA6JIRBG26DL · pith_short_16: SA6JIRBG26DLREGV · pith_short_8: SA6JIRBG

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/SA6JIRBG26DLREGVNBE5LM6NCM \
  | 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: 903c944426d786b890d56849d5b3cd1324638ea138b29fb007db65d28e586c1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75bac734b9d592c1cdaa3a3e726feb3ccb8be97890ec058f33dc36067a2cdd6f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-12-07T09:35:19Z",
    "title_canon_sha256": "e3209dcb1c4b71e4d29e812f24509e25138014e54bf6908c6e0dc313f0e31493"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.01953",
    "kind": "arxiv",
    "version": 2
  }
}