Pith Number

pith:NG26SPNR

pith:2018:NG26SPNR5VKU4ZZHTBK55LXPRI

not attested not anchored not stored refs pending

Uniform interpolation and coherence

George Metcalfe, Tomasz Kowalski

arxiv:1803.09116 v1 · 2018-03-24 · 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{NG26SPNR5VKU4ZZHTBK55LXPRI}

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	2026-05-18T00:20:12.579673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69b5e93db1ed554e67279855deaeef8a0ff2be3038bf43babf2bbfdb49cc0171

Aliases

arxiv: 1803.09116 · arxiv_version: 1803.09116v1 · doi: 10.48550/arxiv.1803.09116 · pith_short_12: NG26SPNR5VKU · pith_short_16: NG26SPNR5VKU4ZZH · pith_short_8: NG26SPNR

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/NG26SPNR5VKU4ZZHTBK55LXPRI \
  | 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: 69b5e93db1ed554e67279855deaeef8a0ff2be3038bf43babf2bbfdb49cc0171

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2db980c8ec4717d57728e1df311d3bc894260111a944e50bf231bdc3a9fe6446",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-03-24T14:11:08Z",
    "title_canon_sha256": "a8062df4b333f631c4d0a82fa71298801cd179bfdb185c4dd9517668b4f37f08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.09116",
    "kind": "arxiv",
    "version": 1
  }
}