Pith Number

pith:J3MJIIP3

pith:2012:J3MJIIP3SDRNA73NHC3K4AMUP3

not attested not anchored not stored refs pending

Smoothing Dynamic Systems with State-Dependent Covariance Matrices

Aleksandr Y. Aravkin, James V. Burke

arxiv:1211.4601 v2 · 2012-11-19 · math.OC · stat.CO · 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{J3MJIIP3SDRNA73NHC3K4AMUP3}

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	2026-05-18T02:56:03.997157Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ed89421fb90e2d07f6d38b6ae01947ef1d71aaac7acbb9fd54c7327abfb40f5

Aliases

arxiv: 1211.4601 · arxiv_version: 1211.4601v2 · doi: 10.48550/arxiv.1211.4601 · pith_short_12: J3MJIIP3SDRN · pith_short_16: J3MJIIP3SDRNA73N · pith_short_8: J3MJIIP3

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/J3MJIIP3SDRNA73NHC3K4AMUP3 \
  | 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: 4ed89421fb90e2d07f6d38b6ae01947ef1d71aaac7acbb9fd54c7327abfb40f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f41799666695b0139128a7cc58fa3726d358d1566d37f87bb75ef68a0f2cc5b6",
    "cross_cats_sorted": [
      "stat.CO",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-11-19T21:42:27Z",
    "title_canon_sha256": "1efcc04f01637897f67879524b6e5221e43fdd70111023ec63bb0e0266b0ef97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4601",
    "kind": "arxiv",
    "version": 2
  }
}