Pith Number

pith:SI3C3TIP

pith:2012:SI3C3TIP7CV3E5ZVVH5HDKKGWA

not attested not anchored not stored refs pending

Derived invariants of irregular varieties and Hochschild homology

Luigi Lombardi

arxiv:1204.1332 v3 · 2012-04-05 · 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{SI3C3TIP7CV3E5ZVVH5HDKKGWA}

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	2026-05-18T02:39:09.336845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92362dcd0ff8abb27735a9fa71a946b010ad19e4e2687be4e8ce67c7dad876c3

Aliases

arxiv: 1204.1332 · arxiv_version: 1204.1332v3 · doi: 10.48550/arxiv.1204.1332 · pith_short_12: SI3C3TIP7CV3 · pith_short_16: SI3C3TIP7CV3E5ZV · pith_short_8: SI3C3TIP

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/SI3C3TIP7CV3E5ZVVH5HDKKGWA \
  | 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: 92362dcd0ff8abb27735a9fa71a946b010ad19e4e2687be4e8ce67c7dad876c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02979d27da9a70819bb7ae93c1ce9dcebdb2d7bab97d3033cb6495af1881e29f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-04-05T19:53:03Z",
    "title_canon_sha256": "7130b6263c2b9b953105c865377770b1408d58d39e606d7109669bde1dea312c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1332",
    "kind": "arxiv",
    "version": 3
  }
}