Pith Number

pith:MYVEWSA2

pith:2020:MYVEWSA2BIXXAL7TGVVXEFWHRD

not attested not anchored not stored refs pending

A Novel Regularization Based on the Error Function for Sparse Recovery

Jing Qin, Ming Yan, Weihong Guo, Yifei Lou

arxiv:2007.02784 v1 · 2020-07-06 · math.NA · cs.NA · 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{MYVEWSA2BIXXAL7TGVVXEFWHRD}

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	2026-07-05T02:21:14.539211Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

662a4b481a0a2f702ff3356b7216c788d574b72da9c2b5c5f39eec36c7f67448

Aliases

arxiv: 2007.02784 · arxiv_version: 2007.02784v1 · doi: 10.48550/arxiv.2007.02784 · pith_short_12: MYVEWSA2BIXX · pith_short_16: MYVEWSA2BIXXAL7T · pith_short_8: MYVEWSA2

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/MYVEWSA2BIXXAL7TGVVXEFWHRD \
  | 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: 662a4b481a0a2f702ff3356b7216c788d574b72da9c2b5c5f39eec36c7f67448

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "813782c547dc89a442034939480565b830f24751963e0e6b4668fa5fe05fcbcc",
    "cross_cats_sorted": [
      "cs.NA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-07-06T14:32:49Z",
    "title_canon_sha256": "1ec307866b03b4e124fa95423d22e3f5da6deca6d27b6fe22620f7b6d6922deb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.02784",
    "kind": "arxiv",
    "version": 1
  }
}