Pith Number

pith:EAWYBRFO

pith:2026:EAWYBRFOVTAFYTRV33X5O7QLLL

not attested not anchored not stored refs pending

Fixed Sets of Automorphisms of Countable, Arithmetically Saturated Structures

James Schmerl

arxiv:2605.20522 v1 · 2026-05-19 · 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{EAWYBRFOVTAFYTRV33X5O7QLLL}

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	2026-05-21T01:04:40.874402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

202d80c4aeacc05c4e35deefd77e0b5af1a5e335423eced6612f72342c3cd258

Aliases

arxiv: 2605.20522 · arxiv_version: 2605.20522v1 · doi: 10.48550/arxiv.2605.20522 · pith_short_12: EAWYBRFOVTAF · pith_short_16: EAWYBRFOVTAFYTRV · pith_short_8: EAWYBRFO

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/EAWYBRFOVTAFYTRV33X5O7QLLL \
  | 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: 202d80c4aeacc05c4e35deefd77e0b5af1a5e335423eced6612f72342c3cd258

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12c0d6eda5515f11bc675919d91cacf08fa926d00fbead5c34d4240b549d16a7",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2026-05-19T21:48:25Z",
    "title_canon_sha256": "6205ea8bdc986946f6f763deeb9e5bc51ef06bf1ccb0c3528edab949a65eef7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20522",
    "kind": "arxiv",
    "version": 1
  }
}