Pith Number

pith:ZRIS3CVM

pith:2018:ZRIS3CVMFX6JJZNFMQLQQLNZXG

not attested not anchored not stored refs pending

Projective aspects of the Geometry of Lagrangian Grassmannians and Spinor varieties

Ageu Barbosa Freire, Alex Massarenti, Rick Rischter

arxiv:1812.07474 v1 · 2018-12-18 · math.AG · 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{ZRIS3CVMFX6JJZNFMQLQQLNZXG}

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	2026-05-17T23:58:00.421108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc512d8aac2dfc94e5a56417082db9b9934ab009669163bcd913701fef6f5bb1

Aliases

arxiv: 1812.07474 · arxiv_version: 1812.07474v1 · doi: 10.48550/arxiv.1812.07474 · pith_short_12: ZRIS3CVMFX6J · pith_short_16: ZRIS3CVMFX6JJZNF · pith_short_8: ZRIS3CVM

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/ZRIS3CVMFX6JJZNFMQLQQLNZXG \
  | 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: cc512d8aac2dfc94e5a56417082db9b9934ab009669163bcd913701fef6f5bb1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc3ef4cc7b1c25a502e28314ace15f8896d9e03aea616ebc2e27ce8fd4634f54",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-12-18T16:42:37Z",
    "title_canon_sha256": "cd95b9dc87a417ad8451160b1de777c9442ad629d99d47563fdad78e33522d4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.07474",
    "kind": "arxiv",
    "version": 1
  }
}