Pith Number

pith:I2LASUHK

pith:2019:I2LASUHKNNKOB2EJTGLZ4H4ANF

not attested not anchored not stored refs pending

Adjoint-based SQP Method with Block-wise quasi-Newton Jacobian Updates for Nonlinear Optimal Control

Pedro Hespanhol, Rien Quirynen

arxiv:1903.08720 v1 · 2019-03-20 · math.OC · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I2LASUHKNNKOB2EJTGLZ4H4ANF}

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	2026-05-17T23:50:44.101379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46960950ea6b54e0e88999979e1f806978e6262b472005ec4af596c98ce6e42f

Aliases

arxiv: 1903.08720 · arxiv_version: 1903.08720v1 · doi: 10.48550/arxiv.1903.08720 · pith_short_12: I2LASUHKNNKO · pith_short_16: I2LASUHKNNKOB2EJ · pith_short_8: I2LASUHK

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/I2LASUHKNNKOB2EJTGLZ4H4ANF \
  | 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: 46960950ea6b54e0e88999979e1f806978e6262b472005ec4af596c98ce6e42f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57ca1336e4441d5a4524db0132d640a578ca2f091eef2f6e759cc40733d7c193",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-03-20T20:10:27Z",
    "title_canon_sha256": "6c594094ad10fd56ae3dbc919444ff8e71a36754f33a03dcab7990217c0f907b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.08720",
    "kind": "arxiv",
    "version": 1
  }
}