Pith Number

pith:SN4PWBIK

pith:2022:SN4PWBIKJESTALNSGJSJBW5ODW

not attested not anchored not stored refs pending

Subspaces Fixed by a Nilpotent Matrix

Bernd Sturmfels, Gabriele Nebe, Marvin Anas Hahn, Mima Stanojkovski

arxiv:2207.00802 v2 · 2022-07-02 · math.RA · math.AG · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SN4PWBIKJESTALNSGJSJBW5ODW}

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	2026-07-05T05:49:29.002736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9378fb050a4925302db2326490dbae1d9330e923f5acf04ab9791ead91227bb5

Aliases

arxiv: 2207.00802 · arxiv_version: 2207.00802v2 · doi: 10.48550/arxiv.2207.00802 · pith_short_12: SN4PWBIKJEST · pith_short_16: SN4PWBIKJESTALNS · pith_short_8: SN4PWBIK

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/SN4PWBIKJESTALNSGJSJBW5ODW \
  | 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: 9378fb050a4925302db2326490dbae1d9330e923f5acf04ab9791ead91227bb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2355831a20e66092ff26b7d6c7e1da4b6714541c6bbef3e6e69420e2f72b5d4",
    "cross_cats_sorted": [
      "math.AG",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2022-07-02T11:33:43Z",
    "title_canon_sha256": "baf8aad780537af6bc01866a28b0e6c7b319c4dfa2434a4ec7d11ddd46aa840a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.00802",
    "kind": "arxiv",
    "version": 2
  }
}