Pith Number

pith:DMVJ5AW4

pith:2017:DMVJ5AW4KHPYLFTQLSNFMFECJ4

not attested not anchored not stored refs pending

The set-theoretic universe $V$ is not necessarily a class-forcing extension of HOD

Joel David Hamkins, Jonas Reitz

arxiv:1709.06062 v2 · 2017-09-18 · 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{DMVJ5AW4KHPYLFTQLSNFMFECJ4}

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	2026-05-18T00:34:33.131745Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b2a9e82dc51df8596705c9a5614824f2f09c8a4f62fbb97783ce390d635109c

Aliases

arxiv: 1709.06062 · arxiv_version: 1709.06062v2 · doi: 10.48550/arxiv.1709.06062 · pith_short_12: DMVJ5AW4KHPY · pith_short_16: DMVJ5AW4KHPYLFTQ · pith_short_8: DMVJ5AW4

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/DMVJ5AW4KHPYLFTQLSNFMFECJ4 \
  | 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: 1b2a9e82dc51df8596705c9a5614824f2f09c8a4f62fbb97783ce390d635109c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee07d89a9a0ecbb285c4ae45a8f05bcf76c6b5152758f43089284bf8affd56d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-09-18T17:38:48Z",
    "title_canon_sha256": "983c763f03febec4455c3afdc88e0669c8cffdd2524231c7ffb3c9798d6e703e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.06062",
    "kind": "arxiv",
    "version": 2
  }
}