Pith Number

pith:TOUPLHNC

pith:2008:TOUPLHNCPBKPTLQ4WD3DLLDNPM

not attested not anchored not stored refs pending

An Application of the Feferman-Vaught Theorem to Automata and Logics for<br> Words over an Infinite Alphabet

Alexis B\`es

arxiv:0801.2498 v2 · 2008-01-16 · cs.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{TOUPLHNCPBKPTLQ4WD3DLLDNPM}

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	2026-05-18T01:37:42.547188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ba8f59da27854f9ae1cb0f635ac6d7b0a92d36ccbbda3e5622edb8325ae6b4e

Aliases

arxiv: 0801.2498 · arxiv_version: 0801.2498v2 · doi: 10.48550/arxiv.0801.2498 · pith_short_12: TOUPLHNCPBKP · pith_short_16: TOUPLHNCPBKPTLQ4 · pith_short_8: TOUPLHNC

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/TOUPLHNCPBKPTLQ4WD3DLLDNPM \
  | 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: 9ba8f59da27854f9ae1cb0f635ac6d7b0a92d36ccbbda3e5622edb8325ae6b4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a596480527f14d6f69aaf65eb4b857a3ca82bf69552bc29600a5a8b9427d345",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.LO",
    "submitted_at": "2008-01-16T14:39:27Z",
    "title_canon_sha256": "156534900524b4948eb66461c08987eeb8cd85ad5a891546fc3bdcbf2af4c771"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.2498",
    "kind": "arxiv",
    "version": 2
  }
}