Pith Number

pith:TDBSQABX

pith:2016:TDBSQABXJPX5FWLWDZCR7H7VPH

not attested not anchored not stored refs pending

An explicit description of the irreducible components of the set of matrix pencils with bounded normal rank

Fernando De Ter\'an, Froil\'an M. Dopico, J. M. Landsberg

arxiv:1606.02574 v1 · 2016-06-08 · math.AG · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TDBSQABXJPX5FWLWDZCR7H7VPH}

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	2026-05-18T01:12:41.037863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98c32800374befd2d9761e451f9ff579e16a81e3b059c906419f3a74beb00896

Aliases

arxiv: 1606.02574 · arxiv_version: 1606.02574v1 · doi: 10.48550/arxiv.1606.02574 · pith_short_12: TDBSQABXJPX5 · pith_short_16: TDBSQABXJPX5FWLW · pith_short_8: TDBSQABX

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/TDBSQABXJPX5FWLWDZCR7H7VPH \
  | 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: 98c32800374befd2d9761e451f9ff579e16a81e3b059c906419f3a74beb00896

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3810160e60f8a7545432620f83621f810430cf7a9d891e468f879dc2ff17931",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-06-08T14:28:25Z",
    "title_canon_sha256": "093c0fb097d2a78441e823bce7da618e21d9fc3c34112409d35bbb9cb9728672"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.02574",
    "kind": "arxiv",
    "version": 1
  }
}