Pith Number

pith:BQABU3WL

pith:2016:BQABU3WLSCJ3IXM4I4CTQ4O3CU

not attested not anchored not stored refs pending

Exact solutions for the denoising problem of piecewise constant images in dimension one

Riccardo Cristoferi

arxiv:1612.05508 v2 · 2016-12-16 · 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{BQABU3WLSCJ3IXM4I4CTQ4O3CU}

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	2026-05-18T00:35:43.799164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c001a6ecb9093b45d9c47053871db150e3b17307fa18a498378723c1c681503

Aliases

arxiv: 1612.05508 · arxiv_version: 1612.05508v2 · doi: 10.48550/arxiv.1612.05508 · pith_short_12: BQABU3WLSCJ3 · pith_short_16: BQABU3WLSCJ3IXM4 · pith_short_8: BQABU3WL

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/BQABU3WLSCJ3IXM4I4CTQ4O3CU \
  | 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: 0c001a6ecb9093b45d9c47053871db150e3b17307fa18a498378723c1c681503

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f0e998bb781d550827a480cee01d5b8b752b26487f6dd1044c0f905b0456c08",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-12-16T15:31:25Z",
    "title_canon_sha256": "bcdef6d75e59c0ca70cd8b3293878d8f30c07d92e406065745d3f2d9e6059f1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.05508",
    "kind": "arxiv",
    "version": 2
  }
}