Pith Number

pith:OD7YMH7T

pith:2016:OD7YMH7TDHJAXMBSEIQC742J6M

not attested not anchored not stored refs pending

A Slow Relative of Hofstadter's Q-Sequence

Nathan Fox

arxiv:1611.08244 v1 · 2016-11-24 · math.NT · 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{OD7YMH7TDHJAXMBSEIQC742J6M}

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	2026-05-18T00:56:39.759376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70ff861ff319d20bb03222202ff349f33861993380f8f05b4bba7239ae250406

Aliases

arxiv: 1611.08244 · arxiv_version: 1611.08244v1 · doi: 10.48550/arxiv.1611.08244 · pith_short_12: OD7YMH7TDHJA · pith_short_16: OD7YMH7TDHJAXMBS · pith_short_8: OD7YMH7T

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/OD7YMH7TDHJAXMBSEIQC742J6M \
  | 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: 70ff861ff319d20bb03222202ff349f33861993380f8f05b4bba7239ae250406

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e3c8c230fba0ba39e6812cd73ab89c9cc0e7098bdfd19017869122e1d985fa1",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2016-11-24T16:39:08Z",
    "title_canon_sha256": "8e868cf99e8bf42b6e85a277418074b69140dcf37906a01e76ee6075a42e7962"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.08244",
    "kind": "arxiv",
    "version": 1
  }
}