Pith Number

pith:TSDLQ2VJ

pith:2013:TSDLQ2VJ4EOWISRTUGI6BJXCSG

not attested not anchored not stored refs pending

A solution to the Pompeiu problem

A.G.Ramm

arxiv:1304.2297 v2 · 2013-04-08 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TSDLQ2VJ4EOWISRTUGI6BJXCSG}

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	2026-05-18T03:28:04.652788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c86b86aa9e11d644a33a191e0a6e2918eaf21d5cc0fb5b492b5ce0138379a7f

Aliases

arxiv: 1304.2297 · arxiv_version: 1304.2297v2 · doi: 10.48550/arxiv.1304.2297 · pith_short_12: TSDLQ2VJ4EOW · pith_short_16: TSDLQ2VJ4EOWISRT · pith_short_8: TSDLQ2VJ

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/TSDLQ2VJ4EOWISRTUGI6BJXCSG \
  | 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: 9c86b86aa9e11d644a33a191e0a6e2918eaf21d5cc0fb5b492b5ce0138379a7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45066bfaaece0eafcd306eefd2da4fbbf014afe518d459bf990eee1ae95eb746",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-04-08T18:29:34Z",
    "title_canon_sha256": "5c76c021c97565eb20b8b1fa5439105d7b5e508acfc78080c94df99736f00919"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2297",
    "kind": "arxiv",
    "version": 2
  }
}