Pith Number

pith:5SFUN4L3

pith:2012:5SFUN4L3SZTEJHWJNXBHDWHC5I

not attested not anchored not stored refs pending

Semi-invariants for concealed-canonical algebras

Grzegorz Bobinski

arxiv:1212.4013 v1 · 2012-12-17 · math.RT · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5SFUN4L3SZTEJHWJNXBHDWHC5I}

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	2026-05-18T03:38:21.744082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec8b46f17b9666449ec96dc271d8e2ea30eead8ff8ef4e9f29d690303c83b977

Aliases

arxiv: 1212.4013 · arxiv_version: 1212.4013v1 · doi: 10.48550/arxiv.1212.4013 · pith_short_12: 5SFUN4L3SZTE · pith_short_16: 5SFUN4L3SZTEJHWJ · pith_short_8: 5SFUN4L3

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/5SFUN4L3SZTEJHWJNXBHDWHC5I \
  | 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: ec8b46f17b9666449ec96dc271d8e2ea30eead8ff8ef4e9f29d690303c83b977

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be656316d19c28c606bce8448e98c54578be232c2279a7d3c53559ce9c7a7082",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2012-12-17T14:52:03Z",
    "title_canon_sha256": "ef02441398231bcbfc8d33807049a3e82a0cfbc39581ac2b7ab63f3a07a3c892"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4013",
    "kind": "arxiv",
    "version": 1
  }
}