Pith Number

pith:3C7BDFWE

pith:2014:3C7BDFWEOUFTYMOCYQMYRDDOG7

not attested not anchored not stored refs pending

Approximate Regularization Path for Nuclear Norm Based H2 Model Reduction

Bo Wahlberg, Cristian R. Rojas, Niclas Blomberg

arxiv:1407.5820 v1 · 2014-07-22 · cs.SY · math.OC · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3C7BDFWEOUFTYMOCYQMYRDDOG7}

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	2026-05-18T02:47:06.562463Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8be1196c4750b3c31c2c419888c6e37e82da4ebd562340fa4bed27e53d63aeb

Aliases

arxiv: 1407.5820 · arxiv_version: 1407.5820v1 · doi: 10.48550/arxiv.1407.5820 · pith_short_12: 3C7BDFWEOUFT · pith_short_16: 3C7BDFWEOUFTYMOC · pith_short_8: 3C7BDFWE

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/3C7BDFWEOUFTYMOCYQMYRDDOG7 \
  | 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: d8be1196c4750b3c31c2c419888c6e37e82da4ebd562340fa4bed27e53d63aeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1558157b74cbc598be98375a4521cc1d6a04bd226b9f8cc1d3af5a2a9703543",
    "cross_cats_sorted": [
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2014-07-22T11:20:11Z",
    "title_canon_sha256": "01b44a5c39d118959812c7ba2354091baa1197d0b304fac98ad86cf5f0315445"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.5820",
    "kind": "arxiv",
    "version": 1
  }
}