Pith Number

pith:QILYS4GH

pith:2018:QILYS4GHNZQTR5JHCQM5WSWPBX

not attested not anchored not stored refs pending

A Comparison of Nonsmooth, Nonconvex, Constrained Optimization Solvers for the Design of Time-Delay Compensators

Tim Mitchell, Tomas Vyhlidal, Vyacheslav Kungurtsev

arxiv:1812.11630 v1 · 2018-12-30 · 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{QILYS4GHNZQTR5JHCQM5WSWPBX}

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	2026-05-17T23:57:11.475534Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82178970c76e6138f5271419db4acf0dc439edc5c402776092b57c5d6ec763cf

Aliases

arxiv: 1812.11630 · arxiv_version: 1812.11630v1 · doi: 10.48550/arxiv.1812.11630 · pith_short_12: QILYS4GHNZQT · pith_short_16: QILYS4GHNZQTR5JH · pith_short_8: QILYS4GH

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/QILYS4GHNZQTR5JHCQM5WSWPBX \
  | 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: 82178970c76e6138f5271419db4acf0dc439edc5c402776092b57c5d6ec763cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fcd0cc2efbe22721fd9048bb536ee7c4f4e628bf47b98f09cbefd815c83071c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-12-30T23:10:25Z",
    "title_canon_sha256": "9b0826972009be943a328bd8b7dbb4269f4b2a16a6dc115496dbcf3097e2c189"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.11630",
    "kind": "arxiv",
    "version": 1
  }
}