Pith Number

pith:2ERROEBH

pith:2018:2ERROEBH6OJR7DRAUVD5NEP4SC

not attested not anchored not stored refs pending

Cardinal Characteristics of Models of Set Theory

Douglas Ulrich

arxiv:1811.05444 v1 · 2018-11-13 · 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{2ERROEBH6OJR7DRAUVD5NEP4SC}

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	2026-05-18T00:00:46.135033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d123171027f3931f8e20a547d691fc90b9fff56b375fdb11b711490488ff6367

Aliases

arxiv: 1811.05444 · arxiv_version: 1811.05444v1 · doi: 10.48550/arxiv.1811.05444 · pith_short_12: 2ERROEBH6OJR · pith_short_16: 2ERROEBH6OJR7DRA · pith_short_8: 2ERROEBH

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/2ERROEBH6OJR7DRAUVD5NEP4SC \
  | 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: d123171027f3931f8e20a547d691fc90b9fff56b375fdb11b711490488ff6367

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eeee003052bfa798e631aacbe8e3f4133a5a991e8b49f96b27a97f77eeb2135f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-11-13T18:23:56Z",
    "title_canon_sha256": "f7c8660fe1b2b18489d19c4e35531d89a01a80a01fa8106196bc1ba476515ef6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.05444",
    "kind": "arxiv",
    "version": 1
  }
}