Pith Number

pith:U6YLZCJ5

pith:2012:U6YLZCJ5FOLBQNC7XM3REYQ5XX

not attested not anchored not stored refs pending

Linear System Identification via Atomic Norm Regularization

Badri Narayan Bhaskar, Benjamin Recht, Gongguo Tang, Parikshit Shah

arxiv:1204.0590 v1 · 2012-04-03 · math.OC · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6YLZCJ5FOLBQNC7XM3REYQ5XX}

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	2026-05-18T03:58:39.049432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7b0bc893d2b9618345fbb3712621dbdc55036d49f2152e289cbf8baa16229dc

Aliases

arxiv: 1204.0590 · arxiv_version: 1204.0590v1 · doi: 10.48550/arxiv.1204.0590 · pith_short_12: U6YLZCJ5FOLB · pith_short_16: U6YLZCJ5FOLBQNC7 · pith_short_8: U6YLZCJ5

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/U6YLZCJ5FOLBQNC7XM3REYQ5XX \
  | 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: a7b0bc893d2b9618345fbb3712621dbdc55036d49f2152e289cbf8baa16229dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5c1f4af2cc6f9e681b9d13c610263a50ecb7965f4656207f415bc5638c054cc",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-04-03T04:07:01Z",
    "title_canon_sha256": "1c62ddacf8a2ce27a4d083a80a20359cf6cea8717a3530ae057654b92800b94e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0590",
    "kind": "arxiv",
    "version": 1
  }
}