Pith Number

pith:P5TMXDLG

pith:2014:P5TMXDLGO5A5Z3U34LY7WXANQK

not attested not anchored not stored refs pending

A new steplength selection for scaled gradient methods with application to image deblurring

Federica Porta, Luca Zanni, Marco Prato

arxiv:1407.2375 v4 · 2014-07-09 · 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{P5TMXDLGO5A5Z3U34LY7WXANQK}

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	2026-05-18T01:26:39.750299Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f66cb8d667741dcee9be2f1fb5c0d82bd9c2c286a3eb9b9bea59d6240dd8a46

Aliases

arxiv: 1407.2375 · arxiv_version: 1407.2375v4 · doi: 10.48550/arxiv.1407.2375 · pith_short_12: P5TMXDLGO5A5 · pith_short_16: P5TMXDLGO5A5Z3U3 · pith_short_8: P5TMXDLG

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/P5TMXDLGO5A5Z3U34LY7WXANQK \
  | 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: 7f66cb8d667741dcee9be2f1fb5c0d82bd9c2c286a3eb9b9bea59d6240dd8a46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "042308c8ee6e6efe60c4a460908c9c6ef40b5655c2ea3f6010e2bd3e9551f18f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-07-09T07:48:47Z",
    "title_canon_sha256": "01d44c9ebe6bebbd7315af36edd585764568c967a1afd4c48b74977bd1ffe7a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.2375",
    "kind": "arxiv",
    "version": 4
  }
}