Pith Number

pith:L6X33NBQ

pith:2021:L6X33NBQXJVV53KEVSMWX5LB64

not attested not anchored not stored refs pending

Regularization with Multilevel Non-stationary Tight Framelets for Image Restoration

Lixin Shen, Raymond H. F. Chan, Xiaosheng Zhuang, Yan-ran Li

arxiv:2102.03903 v1 · 2021-02-07 · 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{L6X33NBQXJVV53KEVSMWX5LB64}

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	2026-07-05T02:13:28.151198Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fafbdb430ba6b5eed44ac996bf561f71ec6e8d3320efb2bf0f34d65afb5f068

Aliases

arxiv: 2102.03903 · arxiv_version: 2102.03903v1 · doi: 10.48550/arxiv.2102.03903 · pith_short_12: L6X33NBQXJVV · pith_short_16: L6X33NBQXJVV53KE · pith_short_8: L6X33NBQ

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/L6X33NBQXJVV53KEVSMWX5LB64 \
  | 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: 5fafbdb430ba6b5eed44ac996bf561f71ec6e8d3320efb2bf0f34d65afb5f068

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "723584357b716834da86b325cd3026d0e1fe80245823217c0760b352747414d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-02-07T20:08:03Z",
    "title_canon_sha256": "3d98ab6ae6c72bef6d71fff2ba8522f69f379ce51af74a515fb99a01226a4e10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.03903",
    "kind": "arxiv",
    "version": 1
  }
}