Pith Number

pith:QA773DM2

pith:2014:QA773DM2HJNWQCDF6VD74NZ7ZO

not attested not anchored not stored refs pending

On efficiently computing the eigenvalues of limited-memory quasi-Newton matrices

Jennifer B. Erway, Roummel F. Marcia

arxiv:1411.7301 v3 · 2014-11-26 · 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{QA773DM2HJNWQCDF6VD74NZ7ZO}

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	2026-05-18T01:37:01.991642Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

803ffd8d9a3a5b680865f547fe373fcbb231060cb0922987eeb987a736a7c542

Aliases

arxiv: 1411.7301 · arxiv_version: 1411.7301v3 · doi: 10.48550/arxiv.1411.7301 · pith_short_12: QA773DM2HJNW · pith_short_16: QA773DM2HJNWQCDF · pith_short_8: QA773DM2

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/QA773DM2HJNWQCDF6VD74NZ7ZO \
  | 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: 803ffd8d9a3a5b680865f547fe373fcbb231060cb0922987eeb987a736a7c542

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46494b049c91e684019d8cc0c5e94767d1a2231e4965774bef98727fbb1a8d98",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-11-26T17:10:18Z",
    "title_canon_sha256": "5098a2b6fc6dcb4c8a9289ef048c1cd07532b44da284de8fc8fd2af9b4cbb526"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.7301",
    "kind": "arxiv",
    "version": 3
  }
}