Pith Number

pith:7WAYYSUT

pith:2015:7WAYYSUTYT7JRPQREWVISCF3U5

not attested not anchored not stored refs pending

On an adaptive regularization for ill-posed nonlinear systems and its trust-region implementation

Benedetta Morini, Elisa Riccietti, Stefania Bellavia

arxiv:1504.03442 v1 · 2015-04-14 · 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{7WAYYSUTYT7JRPQREWVISCF3U5}

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	2026-05-18T02:18:50.940886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd818c4a93c4fe98be1125aa8908bba75495c73b13dd998453cb5b1538aedefd

Aliases

arxiv: 1504.03442 · arxiv_version: 1504.03442v1 · doi: 10.48550/arxiv.1504.03442 · pith_short_12: 7WAYYSUTYT7J · pith_short_16: 7WAYYSUTYT7JRPQR · pith_short_8: 7WAYYSUT

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/7WAYYSUTYT7JRPQREWVISCF3U5 \
  | 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: fd818c4a93c4fe98be1125aa8908bba75495c73b13dd998453cb5b1538aedefd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12f77d86a31c3b03832d0090f09f95ef3645ab6a7624ba7b6a234c82caa98bc8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-04-14T07:42:19Z",
    "title_canon_sha256": "c2ecf59c8430741d052121ae5a004cd3af6780239643bf9bc351908c5f444025"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03442",
    "kind": "arxiv",
    "version": 1
  }
}