Pith Number

pith:RND4ONC6

pith:2009:RND4ONC63P442L4CNTTOYGL5O2

not attested not anchored not stored refs pending

Nonproper Products

Andrzej Roslanowski, Otmar Spinas, Saharon Shelah

arxiv:0905.0526 v3 · 2009-05-05 · 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{RND4ONC63P442L4CNTTOYGL5O2}

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	2026-05-18T02:58:03.291781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b47c7345edbf9cd2f826ce6ec197d7680e9df2ba3413434980fd69b11f16a7d

Aliases

arxiv: 0905.0526 · arxiv_version: 0905.0526v3 · doi: 10.48550/arxiv.0905.0526 · pith_short_12: RND4ONC63P44 · pith_short_16: RND4ONC63P442L4C · pith_short_8: RND4ONC6

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/RND4ONC63P442L4CNTTOYGL5O2 \
  | 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: 8b47c7345edbf9cd2f826ce6ec197d7680e9df2ba3413434980fd69b11f16a7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7da7e3956fbae587a7ae92f3c7c54e1ed15d62f6e5738c90acf0da8a90a1c60b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2009-05-05T05:27:50Z",
    "title_canon_sha256": "b144c25c6d8bba5253a469edb0fc9560e53618883a57716fa0a9ffdae324c250"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0526",
    "kind": "arxiv",
    "version": 3
  }
}