Pith Number

pith:3Z2ETCFE

pith:2014:3Z2ETCFEQBFXGEWQQAOJRGIRYO

not attested not anchored not stored refs pending

Isolated spectral points and Koliha-Drazin invertible elements in quotient Banach algebras and homomorphism ranges

Enrico Boasso

arxiv:1403.3663 v1 · 2014-03-14 · 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{3Z2ETCFEQBFXGEWQQAOJRGIRYO}

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	2026-05-18T02:56:19.749474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de744988a4804b7312d0801c989911c3b4c78ff5e7a3796c07840b9421457374

Aliases

arxiv: 1403.3663 · arxiv_version: 1403.3663v1 · doi: 10.48550/arxiv.1403.3663 · pith_short_12: 3Z2ETCFEQBFX · pith_short_16: 3Z2ETCFEQBFXGEWQ · pith_short_8: 3Z2ETCFE

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/3Z2ETCFEQBFXGEWQQAOJRGIRYO \
  | 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: de744988a4804b7312d0801c989911c3b4c78ff5e7a3796c07840b9421457374

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1033dd4ab83d09e4dbbb9b36c45b89f6a13f612b8880b6cbd26dc80da3ab29b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2014-03-14T18:25:04Z",
    "title_canon_sha256": "116311385325023dd9df4ca7a574668557300dde62089be41646259b8ecf52cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.3663",
    "kind": "arxiv",
    "version": 1
  }
}