Pith Number

pith:HP3YCWCM

pith:2017:HP3YCWCMHZT5QYCXAMKD7UXJKO

not attested not anchored not stored refs pending

Efficient regularization with wavelet sparsity constraints in PAT

J\"urgen Frikel, Markus Haltmeier

arxiv:1703.08240 v1 · 2017-03-23 · 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{HP3YCWCMHZT5QYCXAMKD7UXJKO}

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	2026-05-18T00:48:00.393621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bf781584c3e67d8605703143fd2e953b3b03624f18de33d748b6f7f429ba38c

Aliases

arxiv: 1703.08240 · arxiv_version: 1703.08240v1 · doi: 10.48550/arxiv.1703.08240 · pith_short_12: HP3YCWCMHZT5 · pith_short_16: HP3YCWCMHZT5QYCX · pith_short_8: HP3YCWCM

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/HP3YCWCMHZT5QYCXAMKD7UXJKO \
  | 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: 3bf781584c3e67d8605703143fd2e953b3b03624f18de33d748b6f7f429ba38c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bafb2c344258f1852f560bf3b2313c27898f1b83cbd8e58726b461ad6ea6247",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-03-23T21:53:02Z",
    "title_canon_sha256": "d7bc9abb85ba97f11ba04475723c7a6589a4671741994a20b1e3250b843cef81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.08240",
    "kind": "arxiv",
    "version": 1
  }
}