Pith Number

pith:4X62MGKX

pith:2015:4X62MGKXVEXMEQDARGC2OVE6KQ

not attested not anchored not stored refs pending

Regularization preconditioners for frame-based image deblurring with reduced boundary artifacts

Davide Bianchi, Marco Donatelli, Ting-Zhu Huang, Yuantao Cai

arxiv:1504.07234 v1 · 2015-04-27 · math.NA · cs.NA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4X62MGKXVEXMEQDARGC2OVE6KQ}

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	2026-06-04T17:09:14.565994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5fda61957a92ec240608985a7549e543149cf43485ace96b330f3a6a290af04

Aliases

arxiv: 1504.07234 · arxiv_version: 1504.07234v1 · doi: 10.48550/arxiv.1504.07234 · pith_short_12: 4X62MGKXVEXM · pith_short_16: 4X62MGKXVEXMEQDA · pith_short_8: 4X62MGKX

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/4X62MGKXVEXMEQDARGC2OVE6KQ \
  | 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: e5fda61957a92ec240608985a7549e543149cf43485ace96b330f3a6a290af04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "593e46d2f606e4e35f2b1e65b22a532750d760094ea18d518e3fef0eef9efc61",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-04-27T13:15:36Z",
    "title_canon_sha256": "506f31a64460864afefe40feacbbe9ad21d6625359a1cde3a425731eed475bc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07234",
    "kind": "arxiv",
    "version": 1
  }
}