Pith Number

pith:VNLUVX5Z

pith:2012:VNLUVX5Z4Y7246QHBYVJM4GWCG

not attested not anchored not stored refs pending

A double smoothing technique for solving unconstrained nondifferentiable convex optimization problems

Christopher Hendrich, Radu Ioan Bot

arxiv:1203.2070 v1 · 2012-03-09 · 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{VNLUVX5Z4Y7246QHBYVJM4GWCG}

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	2026-05-18T04:00:27.569298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab574adfb9e63fae7a070e2a9670d6118e81727767f4858f8445d42498cb7fe0

Aliases

arxiv: 1203.2070 · arxiv_version: 1203.2070v1 · doi: 10.48550/arxiv.1203.2070 · pith_short_12: VNLUVX5Z4Y72 · pith_short_16: VNLUVX5Z4Y7246QH · pith_short_8: VNLUVX5Z

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/VNLUVX5Z4Y7246QHBYVJM4GWCG \
  | 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: ab574adfb9e63fae7a070e2a9670d6118e81727767f4858f8445d42498cb7fe0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e4243993668a6b98a977d6403e3327b5e0165ad4d0e00eb42926867ed2458dc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-03-09T13:14:24Z",
    "title_canon_sha256": "b0d01434ffed0656524b9eee08435da8cdf4949b77b6e8c0cada5ece40f76d31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2070",
    "kind": "arxiv",
    "version": 1
  }
}