Pith Number

pith:7VLGOPF6

pith:2014:7VLGOPF672POZXWEBGQB7MX7GS

not attested not anchored not stored refs pending

Regularizing decompositions for matrix pencils and a topological classification of pairs of linear mappings

Tetiana Rybalkina, Vladimir V. Sergeichuk, Vyacheslav Futorny

arxiv:1403.2645 v2 · 2014-03-11 · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7VLGOPF672POZXWEBGQB7MX7GS}

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	2026-05-18T02:52:41.465834Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd56673cbefe9eecdec409a01fb2ff348fdbc0067281768f8e3aec00fcdbb81a

Aliases

arxiv: 1403.2645 · arxiv_version: 1403.2645v2 · doi: 10.48550/arxiv.1403.2645 · pith_short_12: 7VLGOPF672PO · pith_short_16: 7VLGOPF672POZXWE · pith_short_8: 7VLGOPF6

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/7VLGOPF672POZXWEBGQB7MX7GS \
  | 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: fd56673cbefe9eecdec409a01fb2ff348fdbc0067281768f8e3aec00fcdbb81a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa60d4a7db5618925cfa973fb0274619d00a65355319ea8b9716df6e4069b208",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2014-03-11T16:55:00Z",
    "title_canon_sha256": "f756a8342fa05774973225a02544a83455aef7f5a5bcda3590e1bfb520be7146"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.2645",
    "kind": "arxiv",
    "version": 2
  }
}