Pith Number

pith:ZZ7HNX3Z

pith:2012:ZZ7HNX3ZNSCBIVQUNBJQCFVCHK

not attested not anchored not stored refs pending

Note on the dimension of certain algebraic sets of matrices

Jairo Bochi, Nicolas Gourmelon

arxiv:1201.2217 v1 · 2012-01-11 · math.AG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZZ7HNX3ZNSCBIVQUNBJQCFVCHK}

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	2026-05-18T04:04:52.846106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce7e76df796c8414561468530116a23a815fda816613ab2b810f1f5c0d07d946

Aliases

arxiv: 1201.2217 · arxiv_version: 1201.2217v1 · doi: 10.48550/arxiv.1201.2217 · pith_short_12: ZZ7HNX3ZNSCB · pith_short_16: ZZ7HNX3ZNSCBIVQU · pith_short_8: ZZ7HNX3Z

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/ZZ7HNX3ZNSCBIVQUNBJQCFVCHK \
  | 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: ce7e76df796c8414561468530116a23a815fda816613ab2b810f1f5c0d07d946

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "790655baba72b8ca5988fd7af62bc7e30cb5a254e7ba19907fdfb12470dcd334",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-01-11T02:13:02Z",
    "title_canon_sha256": "aa656ccb5aec8293826ad475220302ecd5c6666a7c18ab978a8a5541e19b0ea9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.2217",
    "kind": "arxiv",
    "version": 1
  }
}