Pith Number

pith:ONRH7IKR

pith:2015:ONRH7IKROEK3JJW554R3UJWQV6

not attested not anchored not stored refs pending

A Subspace Method for Large Scale Eigenvalue Optimization

Emre Mengi, Fatih Kangal, Karl Meerbergen, Wim Michiels

arxiv:1508.04214 v3 · 2015-08-18 · 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{ONRH7IKROEK3JJW554R3UJWQV6}

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	2026-05-18T00:42:18.112102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73627fa1517115b4a6ddef23ba26d0af93c55a1bd978a5e8ed5680ca4b494702

Aliases

arxiv: 1508.04214 · arxiv_version: 1508.04214v3 · doi: 10.48550/arxiv.1508.04214 · pith_short_12: ONRH7IKROEK3 · pith_short_16: ONRH7IKROEK3JJW5 · pith_short_8: ONRH7IKR

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/ONRH7IKROEK3JJW554R3UJWQV6 \
  | 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: 73627fa1517115b4a6ddef23ba26d0af93c55a1bd978a5e8ed5680ca4b494702

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03599e1035062c0fd0f8a03e48504b5c02a1a3501eea5bae05ad5ca30b9902b8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-08-18T05:14:02Z",
    "title_canon_sha256": "6d5d8ef7b4f38bcaab0ed9c9545616280f9a3d5d387096f8ed8592cddde24f06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.04214",
    "kind": "arxiv",
    "version": 3
  }
}