Pith Number

pith:YEROU4D3

pith:2018:YEROU4D3UD6KRAPTRWGJJA52E4

not attested not anchored not stored refs pending

An Alternative Estimate for the Numerical Radius of Hilbert Space Operators

B. Moosavi, H.R. Moradi, M. Shah Hosseini

arxiv:1805.09569 v4 · 2018-05-24 · 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{YEROU4D3UD6KRAPTRWGJJA52E4}

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	2026-05-17T23:50:07.278434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c122ea707ba0fca881f38d8c9483ba27117a6dcf730d64e23a90a5556b87e403

Aliases

arxiv: 1805.09569 · arxiv_version: 1805.09569v4 · doi: 10.48550/arxiv.1805.09569 · pith_short_12: YEROU4D3UD6K · pith_short_16: YEROU4D3UD6KRAPT · pith_short_8: YEROU4D3

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/YEROU4D3UD6KRAPTRWGJJA52E4 \
  | 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: c122ea707ba0fca881f38d8c9483ba27117a6dcf730d64e23a90a5556b87e403

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75aff3d80670dd4815baef9033f2a09f57e4e56db79e1165ccc853c215d38a91",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2018-05-24T09:34:25Z",
    "title_canon_sha256": "220fc1feefce0bf8fe980cefb0a1521ff90c8bfb49866068dab28b1a59f9a459"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09569",
    "kind": "arxiv",
    "version": 4
  }
}