Pith Number

pith:LUPN5P6N

pith:2012:LUPN5P6NUKZH57TIOXFUR6MSDF

not attested not anchored not stored refs pending

Atomic norm denoising with applications to line spectral estimation

Badri Narayan Bhaskar, Benjamin Recht, Gongguo Tang

arxiv:1204.0562 v2 · 2012-04-03 · 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{LUPN5P6NUKZH57TIOXFUR6MSDF}

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	2026-05-18T03:33:26.154594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d1edebfcda2b27efe6875cb48f99219485faeed0803d618f1c1b760ebeffc90

Aliases

arxiv: 1204.0562 · arxiv_version: 1204.0562v2 · doi: 10.48550/arxiv.1204.0562 · pith_short_12: LUPN5P6NUKZH · pith_short_16: LUPN5P6NUKZH57TI · pith_short_8: LUPN5P6N

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/LUPN5P6NUKZH57TIOXFUR6MSDF \
  | 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: 5d1edebfcda2b27efe6875cb48f99219485faeed0803d618f1c1b760ebeffc90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca50c1259bc55ad3b5b9dcd703a666cc57251f365c410087012b01ad64b23b96",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-04-03T00:13:34Z",
    "title_canon_sha256": "a83e30fb6743499d32edfdbeb7d7042b996aaa123ec0c2bcc307bb748eb4c43a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0562",
    "kind": "arxiv",
    "version": 2
  }
}