Pith Number

pith:EJ434TLS

pith:2009:EJ434TLS5ZWBKKGDZQ4BQIG45Q

not attested not anchored not stored refs pending

More on the pressing down game

Jakob Kellner, Saharon Shelah

arxiv:0905.3913 v2 · 2009-05-24 · 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{EJ434TLS5ZWBKKGDZQ4BQIG45Q}

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	2026-05-18T04:22:40.524810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2279be4d72ee6c1528c3cc381820dcec371f6db1c156fa4b0f539f10c6680729

Aliases

arxiv: 0905.3913 · arxiv_version: 0905.3913v2 · doi: 10.48550/arxiv.0905.3913 · pith_short_12: EJ434TLS5ZWB · pith_short_16: EJ434TLS5ZWBKKGD · pith_short_8: EJ434TLS

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/EJ434TLS5ZWBKKGDZQ4BQIG45Q \
  | 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: 2279be4d72ee6c1528c3cc381820dcec371f6db1c156fa4b0f539f10c6680729

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b78a154470d322a09bea82976be815129317376d162ca609f5eebab92ba838f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2009-05-24T17:23:39Z",
    "title_canon_sha256": "ce9658d71c1aa362b783e745d092a78b1ef205f7ccd97cd1b0e44da131577450"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3913",
    "kind": "arxiv",
    "version": 2
  }
}