Pith Number

pith:J3PVRHAE

pith:2014:J3PVRHAETB6O45G5F3EDARWZ2F

not attested not anchored not stored refs pending

Partially fundamentally reducible operators in Krein spaces

Branko \'Curgus, Vladimir Derkach

arxiv:1407.7108 v2 · 2014-07-26 · math.SP · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J3PVRHAETB6O45G5F3EDARWZ2F}

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	2026-05-18T02:32:45.924848Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4edf589c04987cee74dd2ec83046d9d167fa6e39f325661730c325361d5e3cd5

Aliases

arxiv: 1407.7108 · arxiv_version: 1407.7108v2 · doi: 10.48550/arxiv.1407.7108 · pith_short_12: J3PVRHAETB6O · pith_short_16: J3PVRHAETB6O45G5 · pith_short_8: J3PVRHAE

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/J3PVRHAETB6O45G5F3EDARWZ2F \
  | 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: 4edf589c04987cee74dd2ec83046d9d167fa6e39f325661730c325361d5e3cd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd91734fb799f4c517365467a21dd7fb521f63dd2a0486fc47c79e9a3e9dc762",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2014-07-26T08:25:20Z",
    "title_canon_sha256": "8b641dd0aee29de1bc6038a3dae768358a0bb89743426f42b024cb9dec624c74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.7108",
    "kind": "arxiv",
    "version": 2
  }
}