Pith Number

pith:5UH2UQXN

pith:2018:5UH2UQXNW2IPH5GYPE6IMHPCLX

not attested not anchored not stored refs pending

Product of extension domains is still an extension domain

Pekka Koskela, Zheng Zhu

arxiv:1809.07071 v1 · 2018-09-19 · math.FA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5UH2UQXNW2IPH5GYPE6IMHPCLX}

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	2026-05-18T00:05:20.747994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed0faa42edb690f3f4d8793c861de25df057ea9b021f188ed415bcd036101408

Aliases

arxiv: 1809.07071 · arxiv_version: 1809.07071v1 · doi: 10.48550/arxiv.1809.07071 · pith_short_12: 5UH2UQXNW2IP · pith_short_16: 5UH2UQXNW2IPH5GY · pith_short_8: 5UH2UQXN

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/5UH2UQXNW2IPH5GYPE6IMHPCLX \
  | 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: ed0faa42edb690f3f4d8793c861de25df057ea9b021f188ed415bcd036101408

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97ecba88cf9ee7cc1af9a9d617d2ae85d494d782c6280a40af66ad5bf01c2167",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2018-09-19T09:00:05Z",
    "title_canon_sha256": "108a6ec58f4d8f14e9ffecb07fae091b3f1b825222f06b9f3571c4a2918fb799"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.07071",
    "kind": "arxiv",
    "version": 1
  }
}