Pith Number

pith:47PHASGV

pith:2012:47PHASGVCOZOEAPZBUXCTNL2PK

not attested not anchored not stored refs pending

Negative Curvature and Second-order optimality for regularized SQP

Daniel Robinson, Phillip Gill, Vyacheslav Kungurtsev

arxiv:1205.2304 v1 · 2012-05-10 · 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{47PHASGVCOZOEAPZBUXCTNL2PK}

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	2026-05-18T03:55:56.647180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7de7048d513b2e201f90d2e29b57a7a925d01d5290daa231bfe8a64113af978

Aliases

arxiv: 1205.2304 · arxiv_version: 1205.2304v1 · doi: 10.48550/arxiv.1205.2304 · pith_short_12: 47PHASGVCOZO · pith_short_16: 47PHASGVCOZOEAPZ · pith_short_8: 47PHASGV

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/47PHASGVCOZOEAPZBUXCTNL2PK \
  | 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: e7de7048d513b2e201f90d2e29b57a7a925d01d5290daa231bfe8a64113af978

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccc3bc00dfcc214f74769ef52cd4c119e83f4a24b4d5ee344683cb34440fadd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-05-10T16:36:49Z",
    "title_canon_sha256": "ccc3bc00dfcc214f74769ef52cd4c119e83f4a24b4d5ee344683cb34440fadd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.2304",
    "kind": "arxiv",
    "version": 1
  }
}