Pith Number

pith:OWU2IPGQ

pith:2012:OWU2IPGQIUG5O72HUXLREZPVHB

not attested not anchored not stored refs pending

On the geometry of spherical varieties

Nicolas Perrin

arxiv:1211.1277 v1 · 2012-11-06 · math.AG · math.GR · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OWU2IPGQIUG5O72HUXLREZPVHB}

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	2026-05-18T03:41:21.941010Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75a9a43cd0450dd77f47a5d71265f538720ffaec36e87660a0f17112a8c60956

Aliases

arxiv: 1211.1277 · arxiv_version: 1211.1277v1 · doi: 10.48550/arxiv.1211.1277 · pith_short_12: OWU2IPGQIUG5 · pith_short_16: OWU2IPGQIUG5O72H · pith_short_8: OWU2IPGQ

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/OWU2IPGQIUG5O72HUXLREZPVHB \
  | 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: 75a9a43cd0450dd77f47a5d71265f538720ffaec36e87660a0f17112a8c60956

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e8db024937dc92cff4d41b39fdc8325c1503a2faaa6f0a92ecdd5ddf6de62c0",
    "cross_cats_sorted": [
      "math.GR",
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-11-06T15:57:13Z",
    "title_canon_sha256": "af46536afb43a44e062ba354d903598928c4f0a3189e9e1b9536a49d27a0c4d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1277",
    "kind": "arxiv",
    "version": 1
  }
}