Pith Number

pith:JJILCT5K

pith:1991:JJILCT5KSBOLHWSCY7QSGYAVHS

not attested not anchored not stored refs pending

Periods implying almost all periods, trees with snowflakes, and zero entropy maps

Alexander M. Blokh

arxiv:math/9201289 v1 · 1991-07-12 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JJILCT5KSBOLHWSCY7QSGYAVHS}

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	2026-05-18T01:22:09.105326Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a50b14faa905cb3da42c7e12360153c8b3c26650d4e58b7584e8128daba5ef1

Aliases

arxiv: math/9201289 · arxiv_version: math/9201289v1 · doi: 10.48550/arxiv.math/9201289 · pith_short_12: JJILCT5KSBOL · pith_short_16: JJILCT5KSBOLHWSC · pith_short_8: JJILCT5K

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/JJILCT5KSBOLHWSCY7QSGYAVHS \
  | 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: 4a50b14faa905cb3da42c7e12360153c8b3c26650d4e58b7584e8128daba5ef1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66a783f73b971d12e3ef9bdf3ae58e82744bbef5f1138f698c91cf8f588e6322",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.DS",
    "submitted_at": "1991-07-12T00:00:00Z",
    "title_canon_sha256": "f64434739f67444f2220890eb726a220c3f60cba970f8946d0a721c7e22ee9e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9201289",
    "kind": "arxiv",
    "version": 1
  }
}