Pith Number

pith:YRCURCGI

pith:2022:YRCURCGIZCQADLLO3H4HCWWZHT

not attested not anchored not stored refs pending

Detecting negative eigenvalues of exact and approximate Hessian matrices in optimization

Cl\'ement W. Royer, Warren Hare

arxiv:2206.05318 v3 · 2022-06-10 · 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{YRCURCGIZCQADLLO3H4HCWWZHT}

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.

Cited by

1 paper in Pith

Scalable Derivative-Free Optimization Algorithms with Low-Dimensional Subspace Techniques

Receipt and verification

First computed	2026-07-05T06:22:58.520865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4454888c8c8a001ad6ed9f8715ad93cfacab9346561022b46ac45b4852f03bf

Aliases

arxiv: 2206.05318 · arxiv_version: 2206.05318v3 · doi: 10.48550/arxiv.2206.05318 · pith_short_12: YRCURCGIZCQA · pith_short_16: YRCURCGIZCQADLLO · pith_short_8: YRCURCGI

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/YRCURCGIZCQADLLO3H4HCWWZHT \
  | 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: c4454888c8c8a001ad6ed9f8715ad93cfacab9346561022b46ac45b4852f03bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfedcdf0704e90facb0ed021beda1d89219f1f2ef23412899106f2f5313ab3da",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2022-06-10T18:33:43Z",
    "title_canon_sha256": "d302bc2e722ca5a02a2126ed3e1bc9bd50dfcfc070a1a437143128e0acb791ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2206.05318",
    "kind": "arxiv",
    "version": 3
  }
}