Pith Number

pith:QB7XJDML

pith:2014:QB7XJDMLKH4273TYLNGBIVG2MY

not attested not anchored not stored refs pending

The model companion of differential fields with free operators

Omar Leon Sanchez, Rahim Moosa

arxiv:1408.1941 v1 · 2014-08-08 · 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{QB7XJDMLKH4273TYLNGBIVG2MY}

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	2026-05-18T02:45:38.815052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

807f748d8b51f9afee785b4c1454da663e0e738459c5e996441224222353e94f

Aliases

arxiv: 1408.1941 · arxiv_version: 1408.1941v1 · doi: 10.48550/arxiv.1408.1941 · pith_short_12: QB7XJDMLKH42 · pith_short_16: QB7XJDMLKH4273TY · pith_short_8: QB7XJDML

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/QB7XJDMLKH4273TYLNGBIVG2MY \
  | 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: 807f748d8b51f9afee785b4c1454da663e0e738459c5e996441224222353e94f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c58e9aaf162ad4a72ad43137341b0b927f8ab6746068530e70b6fc7cdc8cd4a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-08-08T19:06:06Z",
    "title_canon_sha256": "f8f3bb71d9e380bd3f90cc40f0ad9b28d5263aa7051e15b1f4ccae3c7914cca7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.1941",
    "kind": "arxiv",
    "version": 1
  }
}