Pith Number

pith:H65MQUH5

pith:2018:H65MQUH5G4HKUHOU2FDLCIHZ6D

not attested not anchored not stored refs pending

A model with everything except for a well-ordering of the reals

Fabiana Castiblanco, J\"org Brendle, Liang Yu, Liuzhen Wu, Ralf Schindler

arxiv:1809.10420 v1 · 2018-09-27 · 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{H65MQUH5G4HKUHOU2FDLCIHZ6D}

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	2026-05-18T00:04:38.392566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fbac850fd370eaa1dd4d146b120f9f0e2d38c93b8e0c8358e39223b4be508e9

Aliases

arxiv: 1809.10420 · arxiv_version: 1809.10420v1 · doi: 10.48550/arxiv.1809.10420 · pith_short_12: H65MQUH5G4HK · pith_short_16: H65MQUH5G4HKUHOU · pith_short_8: H65MQUH5

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/H65MQUH5G4HKUHOU2FDLCIHZ6D \
  | 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: 3fbac850fd370eaa1dd4d146b120f9f0e2d38c93b8e0c8358e39223b4be508e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8472005cf70273fcde1271a627e15780e8bff713a1fd56684738753d4c55f557",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-09-27T09:22:04Z",
    "title_canon_sha256": "1325455334eba7a22badab8144dd6f138c8fd20a6666bda380b3aa760db6fd8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.10420",
    "kind": "arxiv",
    "version": 1
  }
}