Pith Number

pith:W2LBWK2N

pith:2014:W2LBWK2NF77CX35W7CWHGBX5IG

not attested not anchored not stored refs pending

A global minimization algorithm for Tikhonov functionals with sparsity constraints

Bo Han, Ronny Ramlau, Stephan W. Anzengruber, Wei Wang

arxiv:1401.0435 v2 · 2014-01-02 · 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{W2LBWK2NF77CX35W7CWHGBX5IG}

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	2026-05-18T01:35:57.459627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6961b2b4d2ffe2befb6f8ac7306fd4188cdb497c88932b165eb4a4bb50bcc0c

Aliases

arxiv: 1401.0435 · arxiv_version: 1401.0435v2 · doi: 10.48550/arxiv.1401.0435 · pith_short_12: W2LBWK2NF77C · pith_short_16: W2LBWK2NF77CX35W · pith_short_8: W2LBWK2N

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/W2LBWK2NF77CX35W7CWHGBX5IG \
  | 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: b6961b2b4d2ffe2befb6f8ac7306fd4188cdb497c88932b165eb4a4bb50bcc0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acf2cd2c3f1bef7cdae2c24cff3eca497fa4badf4c2d8d9c87155d415bf6d89c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-01-02T13:44:40Z",
    "title_canon_sha256": "7b542bdc901a31e2c67db25449e509d92f404cd260e59db96b55c7fe66bce891"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.0435",
    "kind": "arxiv",
    "version": 2
  }
}