Pith Number

pith:H6NSYMBS

pith:2016:H6NSYMBSOK7PLPUPWIVBY33RX2

not attested not anchored not stored refs pending

On optimal solutions of the constrained $\ell_0$ regularization and its penalty problem

Na Zhang, Qia Li

arxiv:1610.02125 v1 · 2016-10-07 · 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{H6NSYMBSOK7PLPUPWIVBY33RX2}

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	2026-05-18T00:51:43.612856Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f9b2c303272bef5be8fb22a1c6f71be8c346577b8c3b83e4e33080b67476b92

Aliases

arxiv: 1610.02125 · arxiv_version: 1610.02125v1 · doi: 10.48550/arxiv.1610.02125 · pith_short_12: H6NSYMBSOK7P · pith_short_16: H6NSYMBSOK7PLPUP · pith_short_8: H6NSYMBS

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/H6NSYMBSOK7PLPUPWIVBY33RX2 \
  | 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: 3f9b2c303272bef5be8fb22a1c6f71be8c346577b8c3b83e4e33080b67476b92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f48e77efc38aec3ffb6054d8b4b4faf06609f73d1f559a35c90165e815b3e23f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-10-07T02:17:19Z",
    "title_canon_sha256": "70020b7a110823ddcae42de2d9cf2c60c37ad94b8ffb76a9c0a4987a32fb73c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.02125",
    "kind": "arxiv",
    "version": 1
  }
}