Pith Number

pith:GLHJC5UP

pith:2012:GLHJC5UPLKH3TMEWIPU4CPNRVT

not attested not anchored not stored refs pending

Tensor ranks on tangent developable of Segre varieties

Alessandra Bernardi, Edoardo Ballico

arxiv:1210.7976 v2 · 2012-10-30 · 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{GLHJC5UPLKH3TMEWIPU4CPNRVT}

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	2026-05-18T03:05:35.805506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32ce91768f5a8fb9b09643e9c13db1acf0eaa4bd0f60ecfc0916b7183057fb6a

Aliases

arxiv: 1210.7976 · arxiv_version: 1210.7976v2 · doi: 10.48550/arxiv.1210.7976 · pith_short_12: GLHJC5UPLKH3 · pith_short_16: GLHJC5UPLKH3TMEW · pith_short_8: GLHJC5UP

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/GLHJC5UPLKH3TMEWIPU4CPNRVT \
  | 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: 32ce91768f5a8fb9b09643e9c13db1acf0eaa4bd0f60ecfc0916b7183057fb6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8e023b1ffc6a0b0434063f4ada30a02e36648f8f760aa746d1f0aa9e9af6cca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-10-30T12:14:48Z",
    "title_canon_sha256": "dcf9753378d1b70fbdb2c2c4d7fa8f33e87049193904febaa9ba3065e35033c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.7976",
    "kind": "arxiv",
    "version": 2
  }
}