Pith Number

pith:QBSOOKFD

pith:2014:QBSOOKFDZPX766XNU5HWTLMVLW

not attested not anchored not stored refs pending

On a Convex Set with Nondifferentiable Metric Projection

J. J. P. Veerman, Nguyen Mau Nam, Shyan S. Akmal

arxiv:1412.0058 v1 · 2014-11-29 · 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{QBSOOKFDZPX766XNU5HWTLMVLW}

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	2026-05-18T02:32:31.462470Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8064e728a3cbefff7aeda74f69ad955d83ef40c853820119a69230a8773ab0c5

Aliases

arxiv: 1412.0058 · arxiv_version: 1412.0058v1 · doi: 10.48550/arxiv.1412.0058 · pith_short_12: QBSOOKFDZPX7 · pith_short_16: QBSOOKFDZPX766XN · pith_short_8: QBSOOKFD

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/QBSOOKFDZPX766XNU5HWTLMVLW \
  | 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: 8064e728a3cbefff7aeda74f69ad955d83ef40c853820119a69230a8773ab0c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1349423c6ae5184032d0fafb08f3841b6d54d04e5740dca72b890c38cc31b10d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-11-29T01:33:42Z",
    "title_canon_sha256": "c02c33837b26c91d31854887c02491e83ed025ddbddbcdb3d2dca7512287fb78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.0058",
    "kind": "arxiv",
    "version": 1
  }
}