Pith Number

pith:2QFREUR2

pith:2009:2QFREUR25JNIOIRKZJXJZLQYK7

not attested not anchored not stored refs pending

On penalized estimation for dynamical systems with small noise

Alessandro De Gregorio, Stefano Iacus

arxiv:0912.5078 v3 · 2009-12-27 · math.ST · math.DS · stat.AP · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2QFREUR25JNIOIRKZJXJZLQYK7}

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	2026-05-18T00:21:01.228882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d40b12523aea5a87222aca6e9cae1857c96cdae497f8b40f572cfee0633fcb78

Aliases

arxiv: 0912.5078 · arxiv_version: 0912.5078v3 · doi: 10.48550/arxiv.0912.5078 · pith_short_12: 2QFREUR25JNI · pith_short_16: 2QFREUR25JNIOIRK · pith_short_8: 2QFREUR2

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/2QFREUR25JNIOIRKZJXJZLQYK7 \
  | 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: d40b12523aea5a87222aca6e9cae1857c96cdae497f8b40f572cfee0633fcb78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6ca045e6d1d4645937d855d5f1799f62e9ad4b2cb24001e9839ac6184768cdb",
    "cross_cats_sorted": [
      "math.DS",
      "stat.AP",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2009-12-27T14:33:38Z",
    "title_canon_sha256": "ee72d86d9985ce1a80fe912478c72ed53a5353f1fb67bd8ba9228120945a68cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.5078",
    "kind": "arxiv",
    "version": 3
  }
}