Pith Number

pith:QHV7OCSI

pith:2012:QHV7OCSIESDGM3VBNT2W5DAWOQ

not attested not anchored not stored refs pending

Eigenvalues of non-selfadjoint operators: A comparison of two approaches

Guy Katriel, Marcel Hansmann, Michael Demuth

arxiv:1209.0266 v1 · 2012-09-03 · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHV7OCSIESDGM3VBNT2W5DAWOQ}

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	2026-05-18T02:55:48.632422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81ebf70a482486666ea16cf56e8c16741bebaa276bc858544b72b90e654369de

Aliases

arxiv: 1209.0266 · arxiv_version: 1209.0266v1 · doi: 10.48550/arxiv.1209.0266 · pith_short_12: QHV7OCSIESDG · pith_short_16: QHV7OCSIESDGM3VB · pith_short_8: QHV7OCSI

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/QHV7OCSIESDGM3VBNT2W5DAWOQ \
  | 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: 81ebf70a482486666ea16cf56e8c16741bebaa276bc858544b72b90e654369de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6220ee0dfe986072f9638be408f72316248697016dde3235a9d1ee27245eb8f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2012-09-03T08:14:33Z",
    "title_canon_sha256": "178f72da3bf4fa270bd15c87b03aff1b97fe3c469551a3fa1518eb0b3a1c1150"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.0266",
    "kind": "arxiv",
    "version": 1
  }
}