Pith Number

pith:B4YA2XWK

pith:2019:B4YA2XWKAVOB23BDV5UYTYUTDJ

not attested not anchored not stored refs pending

On simultaneous approximation of several eigenvalues of a semi-definite self-adjoint linear operator in a Hilbert space

Ruslan Sharipov

arxiv:1902.06722 v1 · 2019-02-18 · 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{B4YA2XWKAVOB23BDV5UYTYUTDJ}

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	2026-05-17T23:53:44.723224Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f300d5eca055c1d6c23af6989e2931a5e4eed3b663f0e17757ad4467e458693

Aliases

arxiv: 1902.06722 · arxiv_version: 1902.06722v1 · doi: 10.48550/arxiv.1902.06722 · pith_short_12: B4YA2XWKAVOB · pith_short_16: B4YA2XWKAVOB23BD · pith_short_8: B4YA2XWK

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/B4YA2XWKAVOB23BDV5UYTYUTDJ \
  | 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: 0f300d5eca055c1d6c23af6989e2931a5e4eed3b663f0e17757ad4467e458693

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab4efac9e10d2962f8a3a2a709bac0bf1a91885ff3417934ccc0171018818dd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2019-02-18T18:48:44Z",
    "title_canon_sha256": "b02fb51465d12dbebfe0d0154ed4f263b89d733d3e3bf2319497f0a90160aa29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06722",
    "kind": "arxiv",
    "version": 1
  }
}