Pith Number

pith:ZJ72I2KY

pith:2011:ZJ72I2KYF4MESE6SAVLJRLQO6L

not attested not anchored not stored refs pending

The Ostaszewski square, and homogenous Souslin trees

Assaf Rinot

arxiv:1105.2944 v1 · 2011-05-15 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZJ72I2KYF4MESE6SAVLJRLQO6L}

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	2026-05-18T04:22:01.717580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca7fa469582f184913d2055698ae0ef2f661b896fbfb678881f429d4b51ac289

Aliases

arxiv: 1105.2944 · arxiv_version: 1105.2944v1 · doi: 10.48550/arxiv.1105.2944 · pith_short_12: ZJ72I2KYF4ME · pith_short_16: ZJ72I2KYF4MESE6S · pith_short_8: ZJ72I2KY

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/ZJ72I2KYF4MESE6SAVLJRLQO6L \
  | 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: ca7fa469582f184913d2055698ae0ef2f661b896fbfb678881f429d4b51ac289

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd19b8f7cb97fcee5ace72bef5ddd2428894bff2e12dec87a2c2e3599600b44b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2011-05-15T13:05:01Z",
    "title_canon_sha256": "993259160a9ff558cae1110da34d6f1c2c2fa7fd8075d21b4709baec60cfa36e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.2944",
    "kind": "arxiv",
    "version": 1
  }
}