Pith Number

pith:Q5LJUSJ2

pith:2014:Q5LJUSJ2F6C4QKECILRMTJUD54

not attested not anchored not stored refs pending

A fast nonstationary iterative method with convex penalty for inverse problems in Hilbert spaces

Qinian Jin, Xiliang Lu

arxiv:1402.6544 v1 · 2014-02-26 · 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{Q5LJUSJ2F6C4QKECILRMTJUD54}

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	2026-05-18T01:44:26.939438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87569a493a2f85c8288242e2c9a683ef0827fc7df3d1e65317df13bf586f82c6

Aliases

arxiv: 1402.6544 · arxiv_version: 1402.6544v1 · doi: 10.48550/arxiv.1402.6544 · pith_short_12: Q5LJUSJ2F6C4 · pith_short_16: Q5LJUSJ2F6C4QKEC · pith_short_8: Q5LJUSJ2

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/Q5LJUSJ2F6C4QKECILRMTJUD54 \
  | 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: 87569a493a2f85c8288242e2c9a683ef0827fc7df3d1e65317df13bf586f82c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f88208146533a8e133e18e7045bf48e0f79659d1cbb46de7dd764f445c4219c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-02-26T14:02:51Z",
    "title_canon_sha256": "27c946a5f120040f522929af1c9ecb582b943715990f4ea56666e94edf7ed32e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.6544",
    "kind": "arxiv",
    "version": 1
  }
}