Pith Number

pith:X5QAHXBY

pith:2017:X5QAHXBYLD7J4W5TUEXAU6PRMW

not attested not anchored not stored refs pending

Factorization of Saddle-point Matrices in Dynamical Systems Optimization---Reusing Pivots

Jan Ku\v{r}\'atko

arxiv:1703.09012 v2 · 2017-03-27 · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X5QAHXBYLD7J4W5TUEXAU6PRMW}

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	2026-05-18T00:35:04.529415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf6003dc3858fe9e5bb3a12e0a79f165921b9311ba11c7291c0f246ef093f131

Aliases

arxiv: 1703.09012 · arxiv_version: 1703.09012v2 · doi: 10.48550/arxiv.1703.09012 · pith_short_12: X5QAHXBYLD7J · pith_short_16: X5QAHXBYLD7J4W5T · pith_short_8: X5QAHXBY

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/X5QAHXBYLD7J4W5TUEXAU6PRMW \
  | 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: bf6003dc3858fe9e5bb3a12e0a79f165921b9311ba11c7291c0f246ef093f131

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f269babd5615f2780d560037f763f84af29590b57e28b8fd7fb1009cfdc08bee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-03-27T11:13:35Z",
    "title_canon_sha256": "cdc5d6b37a8f9b182f1751ce669107cadcd5285cc4febf2278703621fd4c2256"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.09012",
    "kind": "arxiv",
    "version": 2
  }
}