Pith Number

pith:2ZKLBGCX

pith:2021:2ZKLBGCXZVGTUTIPALVKGLGZ7Z

not attested not anchored not stored refs pending

A structure preserving shift-invert infinite Arnoldi algorithm for a class of delay eigenvalue problems with Hamiltonian symmetry

Pieter Appeltans, Wim Michiels

arxiv:2110.02665 v3 · 2021-10-06 · math.NA · cs.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{2ZKLBGCXZVGTUTIPALVKGLGZ7Z}

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	2026-07-05T04:40:07.791097Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d654b09857cd4d3a4d0f02eaa32cd9fe6f316fc23b59436accd5ed6d877eb53a

Aliases

arxiv: 2110.02665 · arxiv_version: 2110.02665v3 · doi: 10.48550/arxiv.2110.02665 · pith_short_12: 2ZKLBGCXZVGT · pith_short_16: 2ZKLBGCXZVGTUTIP · pith_short_8: 2ZKLBGCX

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/2ZKLBGCXZVGTUTIPALVKGLGZ7Z \
  | 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: d654b09857cd4d3a4d0f02eaa32cd9fe6f316fc23b59436accd5ed6d877eb53a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d34a16f2adcc0ea15fc058ba4c5ac99d700213ed680c267cdc47b95a2ba0a71",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-10-06T11:39:16Z",
    "title_canon_sha256": "73dbdf2d25c3a2cd816f23abf92020fee713c9916ecfbc0da17948532e31992f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.02665",
    "kind": "arxiv",
    "version": 3
  }
}