Pith Number

pith:O6U42KHC

pith:2015:O6U42KHC35ECXAO3EAGJU3ATF7

not attested not anchored not stored refs pending

On the Number of ON Cells in Cellular Automata

N. J. A. Sloane

arxiv:1503.01168 v1 · 2015-03-04 · 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{O6U42KHC35ECXAO3EAGJU3ATF7}

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	2026-05-18T02:25:39.719892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77a9cd28e2df482b81db200c9a6c132fd425a2cf265c58d10a5a17e3eb765016

Aliases

arxiv: 1503.01168 · arxiv_version: 1503.01168v1 · doi: 10.48550/arxiv.1503.01168 · pith_short_12: O6U42KHC35EC · pith_short_16: O6U42KHC35ECXAO3 · pith_short_8: O6U42KHC

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/O6U42KHC35ECXAO3EAGJU3ATF7 \
  | 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: 77a9cd28e2df482b81db200c9a6c132fd425a2cf265c58d10a5a17e3eb765016

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d3c0ba3990f2940869fceb3aea3cb937d885c10370545d60cf27ecdddd6d716",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-03-04T00:22:02Z",
    "title_canon_sha256": "5540f8161527f56669d7595c011e9430529dc2a49021d84bea068324fb4bab49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.01168",
    "kind": "arxiv",
    "version": 1
  }
}