Pith Number

pith:JNWPC6YP

pith:2015:JNWPC6YPIEKBVJY7RFEJZ2KN2L

not attested not anchored not stored refs pending

Preconditioned eigensolvers for large-scale nonlinear Hermitian eigenproblems with variational characterizations. II. Interior eigenvalues

Daniel B. Szyld, Eugene Vecharynski, Fei Xue

arxiv:1504.02811 v1 · 2015-04-10 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JNWPC6YPIEKBVJY7RFEJZ2KN2L}

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	2026-05-18T02:18:59.926262Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b6cf17b0f41141aa71f89489ce94dd2e49cc70bba4046239848412e12957a3f

Aliases

arxiv: 1504.02811 · arxiv_version: 1504.02811v1 · doi: 10.48550/arxiv.1504.02811 · pith_short_12: JNWPC6YPIEKB · pith_short_16: JNWPC6YPIEKBVJY7 · pith_short_8: JNWPC6YP

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/JNWPC6YPIEKBVJY7RFEJZ2KN2L \
  | 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: 4b6cf17b0f41141aa71f89489ce94dd2e49cc70bba4046239848412e12957a3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9d72f26f0b2acc307a8e9d6ed9d5e71598565c25be2c6d4a3baf1d486d65a0b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-04-10T23:00:17Z",
    "title_canon_sha256": "5ef25ebc3b487269b9ae44ba2014b4431cd306d19c4f9641686a71f8e1168389"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02811",
    "kind": "arxiv",
    "version": 1
  }
}