Pith Number

pith:MFDNZPG6

pith:2020:MFDNZPG6M7ZT6GPBIFLG6RX2MD

not attested not anchored not stored refs pending

Newton Hard Thresholding Pursuit for Sparse LCP via A New Merit Function

Lili Pan, Meijuan Shang, Mu Li, Shenglong Zhou

arxiv:2004.02244 v1 · 2020-04-05 · 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{MFDNZPG6M7ZT6GPBIFLG6RX2MD}

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	2026-07-05T03:31:52.242752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6146dcbcde67f33f19e141566f46fa60e6b71d970b2172e81446022660b8b90a

Aliases

arxiv: 2004.02244 · arxiv_version: 2004.02244v1 · doi: 10.48550/arxiv.2004.02244 · pith_short_12: MFDNZPG6M7ZT · pith_short_16: MFDNZPG6M7ZT6GPB · pith_short_8: MFDNZPG6

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/MFDNZPG6M7ZT6GPBIFLG6RX2MD \
  | 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: 6146dcbcde67f33f19e141566f46fa60e6b71d970b2172e81446022660b8b90a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56836c7660ea0142f26c554aed5110898466732f801315376ab75a4e432fede5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-04-05T16:14:41Z",
    "title_canon_sha256": "bd0bbe82a2a39b17c6a060747bd495657c5162b93df5e7d7fe5d499f7f17a293"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.02244",
    "kind": "arxiv",
    "version": 1
  }
}