Pith Number

pith:DQ3HVP5T

pith:2017:DQ3HVP5TJGFFQT4F7J6ATX2BWV

not attested not anchored not stored refs pending

Ordinal Definability and Combinatorics of Equivalence Relations

William Chan

arxiv:1711.04353 v1 · 2017-11-12 · 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{DQ3HVP5TJGFFQT4F7J6ATX2BWV}

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	2026-05-18T00:30:39.303170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c367abfb3498a584f85fa7c09df41b57fc06a3bc26c28e682333315ab6c1f77

Aliases

arxiv: 1711.04353 · arxiv_version: 1711.04353v1 · doi: 10.48550/arxiv.1711.04353 · pith_short_12: DQ3HVP5TJGFF · pith_short_16: DQ3HVP5TJGFFQT4F · pith_short_8: DQ3HVP5T

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/DQ3HVP5TJGFFQT4F7J6ATX2BWV \
  | 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: 1c367abfb3498a584f85fa7c09df41b57fc06a3bc26c28e682333315ab6c1f77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5debda3291abf374b1a786cfa06d0a945028c37ba674f983371e999b8fd64ba8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-11-12T20:41:12Z",
    "title_canon_sha256": "b13409d5150280847b421612f1cbaf1c465b7bc8547772ca0db51750dc0de2f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.04353",
    "kind": "arxiv",
    "version": 1
  }
}