Pith Number

pith:AHSNBICQ

pith:2013:AHSNBICQO4BBF3EFY6KYC2A5EK

not attested not anchored not stored refs pending

Efficiently preconditioned Inexact Newton methods for large symmetric eigenvalue problems

Angeles Martinez, Luca Bergamaschi

arxiv:1312.1553 v1 · 2013-12-05 · 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{AHSNBICQO4BBF3EFY6KYC2A5EK}

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	2026-05-18T03:05:26.943986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01e4d0a050770212ec85c79581681d229c6a68227c125eaceab4827244479604

Aliases

arxiv: 1312.1553 · arxiv_version: 1312.1553v1 · doi: 10.48550/arxiv.1312.1553 · pith_short_12: AHSNBICQO4BB · pith_short_16: AHSNBICQO4BBF3EF · pith_short_8: AHSNBICQ

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/AHSNBICQO4BBF3EFY6KYC2A5EK \
  | 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: 01e4d0a050770212ec85c79581681d229c6a68227c125eaceab4827244479604

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2a41be5cf43ee53f2040a8dc91b52f33504027185ba27c1bdb3fd3d5c41147c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-12-05T14:08:24Z",
    "title_canon_sha256": "f88e8cdbf8b62cf2a20a2590cb5983caf3dd875a38b9e1edeabdfe75f0c41b42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.1553",
    "kind": "arxiv",
    "version": 1
  }
}