Pith Number

pith:RU6KJ3F5

pith:2018:RU6KJ3F5C4T6E4NGGGB7P4WMG3

not attested not anchored not stored refs pending

Degrees of Categoricity Above Limit Ordinals

Barbara F. Csima, Matthew Harrison-Trainor, Michael Deveau, Mohammad Assem Mahmoud

arxiv:1805.10249 v2 · 2018-05-25 · 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{RU6KJ3F5C4T6E4NGGGB7P4WMG3}

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	2026-05-18T00:09:05.430442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d3ca4ecbd1727e271a63183f7f2cc36eab75624d87c093b5e7546f4f15739b1

Aliases

arxiv: 1805.10249 · arxiv_version: 1805.10249v2 · doi: 10.48550/arxiv.1805.10249 · pith_short_12: RU6KJ3F5C4T6 · pith_short_16: RU6KJ3F5C4T6E4NG · pith_short_8: RU6KJ3F5

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/RU6KJ3F5C4T6E4NGGGB7P4WMG3 \
  | 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: 8d3ca4ecbd1727e271a63183f7f2cc36eab75624d87c093b5e7546f4f15739b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a7cce2ae491316ea2266f4c8f67af2578769a6bc5f7fc5624baed5b1c3196ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-05-25T17:02:27Z",
    "title_canon_sha256": "6a05ebb60f40d44ca03dee932c1480b50920a3407c68cb523429d480fb3d9940"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.10249",
    "kind": "arxiv",
    "version": 2
  }
}