Pith Number

pith:2EJUYTGB

pith:2012:2EJUYTGBVU6Q4PIDUWE7EKXBER

not attested not anchored not stored refs pending

On the Nuclear Norm heuristic for a Hankel matrix Recovery Problem

Kristiaan Pelckmans, Liang Dai

arxiv:1207.4420 v4 · 2012-07-18 · cs.SY · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2EJUYTGBVU6Q4PIDUWE7EKXBER}

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	2026-05-18T02:53:30.551936Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1134c4cc1ad3d0e3d03a589f22ae12468ae4a64a460b1543c81a26c92a37d25

Aliases

arxiv: 1207.4420 · arxiv_version: 1207.4420v4 · doi: 10.48550/arxiv.1207.4420 · pith_short_12: 2EJUYTGBVU6Q · pith_short_16: 2EJUYTGBVU6Q4PID · pith_short_8: 2EJUYTGB

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/2EJUYTGBVU6Q4PIDUWE7EKXBER \
  | 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: d1134c4cc1ad3d0e3d03a589f22ae12468ae4a64a460b1543c81a26c92a37d25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0949e5333479d58187a7a60d7bf31c5e964b244f7d0117fc3d876c95f270f83",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2012-07-18T17:33:28Z",
    "title_canon_sha256": "7b133ac04373ad5be808fe20de76ddf1f9bde1b9b2c2e43cd63ccf09a760a69c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4420",
    "kind": "arxiv",
    "version": 4
  }
}