Pith Number

pith:OZSQU6PZ

pith:2009:OZSQU6PZ6STJ7LG5TIDHTNXEHD

not attested not anchored not stored refs pending

KAM \`{a} la R

J\"urgen P\"oschel

arxiv:0909.1015 v2 · 2009-09-06 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OZSQU6PZ6STJ7LG5TIDHTNXEHD}

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	2026-05-18T02:11:59.491434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76650a79f9f4a69facdd9a0679b6e438f27b52319537b76a7535e383e6940ee1

Aliases

arxiv: 0909.1015 · arxiv_version: 0909.1015v2 · doi: 10.48550/arxiv.0909.1015 · pith_short_12: OZSQU6PZ6STJ · pith_short_16: OZSQU6PZ6STJ7LG5 · pith_short_8: OZSQU6PZ

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/OZSQU6PZ6STJ7LG5TIDHTNXEHD \
  | 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: 76650a79f9f4a69facdd9a0679b6e438f27b52319537b76a7535e383e6940ee1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47a262cef1ee99d0d454fb44275e47020996a917c8bcfbf078ce51120b59cadd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2009-09-06T13:05:35Z",
    "title_canon_sha256": "4ff44c57d761424b0f59f85fed079039f2ad72245d53c5d9d2ed747e31d0147a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1015",
    "kind": "arxiv",
    "version": 2
  }
}