Pith Number

pith:WEQJMT4B

pith:2011:WEQJMT4BOF6H2W6PQIYJOGGLK2

not attested not anchored not stored refs pending

A new approach to nonrepetitive sequences

Jakub Kozik, Jaros{\l}aw Grytczuk, Piotr Micek

arxiv:1103.3809 v2 · 2011-03-19 · math.CO · 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{WEQJMT4BOF6H2W6PQIYJOGGLK2}

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	2026-05-18T02:39:38.473780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b120964f81717c7d5bcf82309718cb56b9d191dca88ae298dabcf124fd3827b2

Aliases

arxiv: 1103.3809 · arxiv_version: 1103.3809v2 · doi: 10.48550/arxiv.1103.3809 · pith_short_12: WEQJMT4BOF6H · pith_short_16: WEQJMT4BOF6H2W6P · pith_short_8: WEQJMT4B

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/WEQJMT4BOF6H2W6PQIYJOGGLK2 \
  | 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: b120964f81717c7d5bcf82309718cb56b9d191dca88ae298dabcf124fd3827b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0177ad3da67f61ffe460e49b87203a942d1ac219f3670315a76502f5c9b51863",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-03-19T21:16:08Z",
    "title_canon_sha256": "e8ce859ac6b681200af26382aa6cf391af4e3e7cddda6b0ccfbf45c9f3a3c45c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3809",
    "kind": "arxiv",
    "version": 2
  }
}