Pith Number

pith:I4ANPWGW

pith:2017:I4ANPWGWPQGFSRHUWPR56LRJTZ

not attested not anchored not stored refs pending

Disguised and new Quasi-Newton methods for nonlinear eigenvalue problems

Antti Koskela, Elias Jarlebring, Giampaolo Mele

arxiv:1702.08492 v1 · 2017-02-27 · 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{I4ANPWGWPQGFSRHUWPR56LRJTZ}

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	2026-05-18T00:49:48.576645Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4700d7d8d67c0c5944f4b3e3df2e299e6ff064f9a7d321af17582a8ea79ef9ca

Aliases

arxiv: 1702.08492 · arxiv_version: 1702.08492v1 · doi: 10.48550/arxiv.1702.08492 · pith_short_12: I4ANPWGWPQGF · pith_short_16: I4ANPWGWPQGFSRHU · pith_short_8: I4ANPWGW

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/I4ANPWGWPQGFSRHUWPR56LRJTZ \
  | 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: 4700d7d8d67c0c5944f4b3e3df2e299e6ff064f9a7d321af17582a8ea79ef9ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed4369136118de7f9af791d10c2d165c95e85b046e4645fa5a6f038a9a96bda8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-02-27T19:54:11Z",
    "title_canon_sha256": "a2d4684cbdb7072850452826fc2546ad04c55b7fe2c142e85a612fa13df6e965"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.08492",
    "kind": "arxiv",
    "version": 1
  }
}