Pith Number

pith:FWIMJ7VE

pith:2022:FWIMJ7VEYYJELDF7LFCAG3EETB

not attested not anchored not stored refs pending

The second fundamental form of the moduli space of cubic threefolds in $\mathcal A_5$

Elisabetta Colombo, Gian Pietro Pirola, Juan Carlos Naranjo, Paola Frediani

arxiv:2207.13432 v3 · 2022-07-27 · 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{FWIMJ7VEYYJELDF7LFCAG3EETB}

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	2026-05-20T14:03:15.883908Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d90c4fea4c612458cbf5944036c84985021823f616b62cc06a3fb360ed97ef5

Aliases

arxiv: 2207.13432 · arxiv_version: 2207.13432v3 · doi: 10.48550/arxiv.2207.13432 · pith_short_12: FWIMJ7VEYYJE · pith_short_16: FWIMJ7VEYYJELDF7 · pith_short_8: FWIMJ7VE

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/FWIMJ7VEYYJELDF7LFCAG3EETB \
  | 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: 2d90c4fea4c612458cbf5944036c84985021823f616b62cc06a3fb360ed97ef5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d26e55145e5a6f9417ed036376dc10dd7eb3d184a12ed74d13c674e9f485a3c9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2022-07-27T10:21:57Z",
    "title_canon_sha256": "10ba843608d600bafdd35a758c25847bee9fd7f9863a5bffb9472f7b312e0865"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.13432",
    "kind": "arxiv",
    "version": 3
  }
}