Pith Number

pith:UG3UYCRR

pith:2011:UG3UYCRR4UHXSNYMK5LFBDMSBQ

not attested not anchored not stored refs pending

Codimension Two Determinantal Varieties with Isolated Singularities

Maria Aparecida Soares Ruas, Miriam da Silva Pereira

arxiv:1110.5580 v3 · 2011-10-24 · 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{UG3UYCRR4UHXSNYMK5LFBDMSBQ}

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	2026-05-18T04:07:31.925819Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1b74c0a31e50f79370c5756508d920c1476a0ee7d1e2199c3ddb572244bc00c

Aliases

arxiv: 1110.5580 · arxiv_version: 1110.5580v3 · doi: 10.48550/arxiv.1110.5580 · pith_short_12: UG3UYCRR4UHX · pith_short_16: UG3UYCRR4UHXSNYM · pith_short_8: UG3UYCRR

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/UG3UYCRR4UHXSNYMK5LFBDMSBQ \
  | 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: a1b74c0a31e50f79370c5756508d920c1476a0ee7d1e2199c3ddb572244bc00c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf780d6552a26748952ef531c3e0802aac0b6325622716b8a684ee8dae9a54bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-10-24T13:41:10Z",
    "title_canon_sha256": "e0014dc17da65bc40b8d62861ba25f5dce576e652a78b2f49021ad93f79cc26e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.5580",
    "kind": "arxiv",
    "version": 3
  }
}