Pith Number

pith:VFSTVTJR

pith:2012:VFSTVTJRTVSMO554TD5SP5O2QH

not attested not anchored not stored refs pending

Image denoising: learning noise distribution via PDE-constrained optimization

Carola-Bibiane Sch\"onlieb, Juan-Carlos De los Reyes

arxiv:1207.3425 v1 · 2012-07-14 · math.OC · math.AP · math.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{VFSTVTJRTVSMO554TD5SP5O2QH}

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	2026-05-18T03:51:01.176094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9653acd319d64c777bc98fb27f5da81e5ccfac5c7970248ab42048bc8d4a7fd

Aliases

arxiv: 1207.3425 · arxiv_version: 1207.3425v1 · doi: 10.48550/arxiv.1207.3425 · pith_short_12: VFSTVTJRTVSM · pith_short_16: VFSTVTJRTVSMO554 · pith_short_8: VFSTVTJR

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/VFSTVTJRTVSMO554TD5SP5O2QH \
  | 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: a9653acd319d64c777bc98fb27f5da81e5ccfac5c7970248ab42048bc8d4a7fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4565a943b8dc9cfe6cee881d45606f3bf25b9bb2002dc5f0a95615f5e2960894",
    "cross_cats_sorted": [
      "math.AP",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-07-14T14:11:39Z",
    "title_canon_sha256": "c7cf1a85fd7bf1adf326857d890341f501e77d562fc983aceef72a0abc5cde34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.3425",
    "kind": "arxiv",
    "version": 1
  }
}