Pith Number

pith:YEX6SR76

pith:2026:YEX6SR764SUCL2PLXMQUHRTIRF

not attested not anchored not stored refs pending

Classification Theory and the Construction of PAC Fields

Nicholas Ramsey

arxiv:2605.28299 v1 · 2026-05-27 · 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{YEX6SR764SUCL2PLXMQUHRTIRF}

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	2026-05-28T01:05:05.610971Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c12fe947fee4a825e9ebbb2143c6688976213a275fde782d1611f4ca73bff663

Aliases

arxiv: 2605.28299 · arxiv_version: 2605.28299v1 · doi: 10.48550/arxiv.2605.28299 · pith_short_12: YEX6SR764SUC · pith_short_16: YEX6SR764SUCL2PL · pith_short_8: YEX6SR76

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/YEX6SR764SUCL2PLXMQUHRTIRF \
  | 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: c12fe947fee4a825e9ebbb2143c6688976213a275fde782d1611f4ca73bff663

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04836dc80335a6fa29d11c83945bbd4a47cde313356cc42e9d120dbab4eaecd1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2026-05-27T10:49:46Z",
    "title_canon_sha256": "dfebc19580e0dd21564890ef1242e2abe13e2db88a29ef15e8af4cc6301b737b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28299",
    "kind": "arxiv",
    "version": 1
  }
}