Pith Number

pith:IY2QUZTP

pith:2014:IY2QUZTPCSZBSIKPH6YHXBFJOB

not attested not anchored not stored refs pending

Implicitly definable generalized quantifiers

Fredrik Engstr\"om

arxiv:1410.3625 v1 · 2014-10-14 · 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{IY2QUZTPCSZBSIKPH6YHXBFJOB}

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	2026-05-18T02:40:09.355338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46350a666f14b219214f3fb07b84a9707a790bd91561530cf8d4960afb4b4d4f

Aliases

arxiv: 1410.3625 · arxiv_version: 1410.3625v1 · doi: 10.48550/arxiv.1410.3625 · pith_short_12: IY2QUZTPCSZB · pith_short_16: IY2QUZTPCSZBSIKP · pith_short_8: IY2QUZTP

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/IY2QUZTPCSZBSIKPH6YHXBFJOB \
  | 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: 46350a666f14b219214f3fb07b84a9707a790bd91561530cf8d4960afb4b4d4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "796bb580bc91c77f7f087d864e2c58592e23667fc97f818cb991cfab5cc72ff8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-10-14T09:40:10Z",
    "title_canon_sha256": "a1f91583a13eb1270977a510146cbf278e40b8d13a990baed143a280243c6b9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.3625",
    "kind": "arxiv",
    "version": 1
  }
}