Pith Number

pith:JIP6PFJI

pith:2015:JIP6PFJIHNE7VWNSOOW3DXDMWZ

not attested not anchored not stored refs pending

On $\ell^1$-regularization in light of Nashed's ill-posedness concept

Bernd Hofmann, Ivan Veselic, Jens Flemming

arxiv:1501.07415 v2 · 2015-01-29 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JIP6PFJIHNE7VWNSOOW3DXDMWZ}

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	2026-05-18T02:09:41.256950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a1fe795283b49fad9b273adb1dc6cb650dc939f5b0bf4ff789d8d016f8690c5

Aliases

arxiv: 1501.07415 · arxiv_version: 1501.07415v2 · doi: 10.48550/arxiv.1501.07415 · pith_short_12: JIP6PFJIHNE7 · pith_short_16: JIP6PFJIHNE7VWNS · pith_short_8: JIP6PFJI

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/JIP6PFJIHNE7VWNSOOW3DXDMWZ \
  | 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: 4a1fe795283b49fad9b273adb1dc6cb650dc939f5b0bf4ff789d8d016f8690c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a88176cb7afbde29db889e7f61bb04f1b4320df9040df92a2fa685dbd9a54956",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2015-01-29T11:15:04Z",
    "title_canon_sha256": "38ca9b6c9e40b4c10b898737b4b1fff77d1a7c18aee8a0517caed6b5994949ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.07415",
    "kind": "arxiv",
    "version": 2
  }
}