Pith Number

pith:QJEPOC7T

pith:2018:QJEPOC7TFIVO6HZV3HQQ2WP5TF

not attested not anchored not stored refs pending

The 2-component BKP Grassmanian and simple singularities of type D

Jipeng Cheng, Todor MIlanov

arxiv:1804.07417 v1 · 2018-04-20 · math.AG · hep-th · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QJEPOC7TFIVO6HZV3HQQ2WP5TF}

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	2026-05-18T00:17:58.893877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8248f70bf32a2aef1f35d9e10d59fd995ca5e161944ca3ca46fdac43118cd5d7

Aliases

arxiv: 1804.07417 · arxiv_version: 1804.07417v1 · doi: 10.48550/arxiv.1804.07417 · pith_short_12: QJEPOC7TFIVO · pith_short_16: QJEPOC7TFIVO6HZV · pith_short_8: QJEPOC7T

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/QJEPOC7TFIVO6HZV3HQQ2WP5TF \
  | 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: 8248f70bf32a2aef1f35d9e10d59fd995ca5e161944ca3ca46fdac43118cd5d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88e6c5c32d1ee9f62b2982ec243770aa0b4a1380fba513c0518990a40d60cad8",
    "cross_cats_sorted": [
      "hep-th",
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-04-20T01:19:00Z",
    "title_canon_sha256": "05f109a3afbe4367b8d147480443aa27c5acfd79b1fa12d6de74a18195077dbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07417",
    "kind": "arxiv",
    "version": 1
  }
}