Pith Number

pith:ZOYY4YD5

pith:2009:ZOYY4YD5DJRZAYHMOWB3BXWFG6

not attested not anchored not stored refs pending

The Weil algebra and the Van Est isomorphism

Camilo Arias Abad, Marius Crainic

arxiv:0901.0322 v2 · 2009-01-03 · math.DG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZOYY4YD5DJRZAYHMOWB3BXWFG6}

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	2026-05-18T04:30:03.025582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbb18e607d1a639060ec7583b0dec537876bcc3c2e6c89f96719628d6721b335

Aliases

arxiv: 0901.0322 · arxiv_version: 0901.0322v2 · doi: 10.48550/arxiv.0901.0322 · pith_short_12: ZOYY4YD5DJRZ · pith_short_16: ZOYY4YD5DJRZAYHM · pith_short_8: ZOYY4YD5

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/ZOYY4YD5DJRZAYHMOWB3BXWFG6 \
  | 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: cbb18e607d1a639060ec7583b0dec537876bcc3c2e6c89f96719628d6721b335

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f78c1e9b561ec7e7b5ca305973f00c0d3f785fa42ecca19f40342d70248258d0",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-01-03T13:21:21Z",
    "title_canon_sha256": "036c5b8b8aaaa90957519d447eb02e92c82830f76272491460387a4bf3e41df7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.0322",
    "kind": "arxiv",
    "version": 2
  }
}