Pith Number

pith:QVD2WIQ7

pith:2014:QVD2WIQ733MMZ5CYC7EAUQKW7L

not attested not anchored not stored refs pending

MRRR-based Eigensolvers for Multi-core Processors and Supercomputers

((1) AICES, Matthias Petschow (1), RWTH Aachen)

arxiv:1401.4950 v1 · 2014-01-20 · cs.MS · cs.NA · cs.PF · 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{QVD2WIQ733MMZ5CYC7EAUQKW7L}

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	2026-05-18T03:01:43.892818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8547ab221fded8ccf45817c80a4156fad53f676419ba66a6a7cfbc25c06034fd

Aliases

arxiv: 1401.4950 · arxiv_version: 1401.4950v1 · doi: 10.48550/arxiv.1401.4950 · pith_short_12: QVD2WIQ733MM · pith_short_16: QVD2WIQ733MMZ5CY · pith_short_8: QVD2WIQ7

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/QVD2WIQ733MMZ5CYC7EAUQKW7L \
  | 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: 8547ab221fded8ccf45817c80a4156fad53f676419ba66a6a7cfbc25c06034fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55843a50141213387b2a4f39ff775d6b32378dc6fe7c84cf7bdfbdeb7473b60f",
    "cross_cats_sorted": [
      "cs.NA",
      "cs.PF",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2014-01-20T15:52:03Z",
    "title_canon_sha256": "8fb1e56984aa82957fb75eff73c6f479217aec1229cab048134ed145c1cb177f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.4950",
    "kind": "arxiv",
    "version": 1
  }
}