Pith Number

pith:CQ72W5RH

pith:2011:CQ72W5RHSRXSJL2XUTZFAORCJZ

not attested not anchored not stored refs pending

Nonrepetitive sequences on arithmetic progressions

Jakub Kozik, Jaros{\l}aw Grytczuk, Marcin Witkowski

arxiv:1102.5438 v2 · 2011-02-26 · math.CO · cs.DM · cs.DS · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CQ72W5RHSRXSJL2XUTZFAORCJZ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T04:24:27.328969Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

143fab7627946f24af57a4f2503a224e7edfbd26f5ef9314da6be20a4b04cee6

Aliases

arxiv: 1102.5438 · arxiv_version: 1102.5438v2 · doi: 10.48550/arxiv.1102.5438 · pith_short_12: CQ72W5RHSRXS · pith_short_16: CQ72W5RHSRXSJL2X · pith_short_8: CQ72W5RH

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/CQ72W5RHSRXSJL2XUTZFAORCJZ \
  | 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: 143fab7627946f24af57a4f2503a224e7edfbd26f5ef9314da6be20a4b04cee6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0424ae8b67e0cf5e2d1a0ec1f4e64c403a09f4ff147b06258161db3cebbadc4d",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.DS",
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-02-26T19:16:17Z",
    "title_canon_sha256": "97510979c83d757e14a04b49410f0556d00154c3dba28dbf1591091c0813877e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.5438",
    "kind": "arxiv",
    "version": 2
  }
}