Pith Number

pith:SK55IN4W

pith:2009:SK55IN4WHM5TGXGJ6JUCKFAPFG

not attested not anchored not stored refs pending

The Poisson geometry of SU(1,1)

McKenzie Lamb, Philip Foth

arxiv:0911.3612 v2 · 2009-11-18 · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SK55IN4WHM5TGXGJ6JUCKFAPFG}

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	2026-05-18T02:10:46.241490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92bbd437963b3b335cc9f26825140f29b913af13113365784c705eb21179e656

Aliases

arxiv: 0911.3612 · arxiv_version: 0911.3612v2 · doi: 10.48550/arxiv.0911.3612 · pith_short_12: SK55IN4WHM5T · pith_short_16: SK55IN4WHM5TGXGJ · pith_short_8: SK55IN4W

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/SK55IN4WHM5TGXGJ6JUCKFAPFG \
  | 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: 92bbd437963b3b335cc9f26825140f29b913af13113365784c705eb21179e656

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3d1421d8f52819044edebe15af830ab16edd2a265c4d777f9394aecdb57c8a4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2009-11-18T17:39:04Z",
    "title_canon_sha256": "896b7d05c52112f569fe06191ea23ede1b046da2029931026038034c4ab8af82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3612",
    "kind": "arxiv",
    "version": 2
  }
}