Pith Number

pith:62YGTM4A

pith:2016:62YGTM4AWBDQ2R6FTT2QGE3KNP

not attested not anchored not stored refs pending

On Sparsity by NUV-EM, Gaussian Message Passing, and Kalman Smoothing

Federico Wadehn, Hampus Malmberg, Hans-Andrea Loeliger, Lukas Bruderer, Nour Zalmai

arxiv:1602.02673 v1 · 2016-02-08 · 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{62YGTM4AWBDQ2R6FTT2QGE3KNP}

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	2026-05-18T01:21:08.222884Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6b069b380b0470d47c59cf503136a6bfb6491d2fb4035a5dfff26703dc00318

Aliases

arxiv: 1602.02673 · arxiv_version: 1602.02673v1 · doi: 10.48550/arxiv.1602.02673 · pith_short_12: 62YGTM4AWBDQ · pith_short_16: 62YGTM4AWBDQ2R6F · pith_short_8: 62YGTM4A

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/62YGTM4AWBDQ2R6FTT2QGE3KNP \
  | 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: f6b069b380b0470d47c59cf503136a6bfb6491d2fb4035a5dfff26703dc00318

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80e64f9f65d75be48430a432c039ca6d246e0204ac8c8b96dfc65ac1f54ce5d7",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2016-02-08T18:03:12Z",
    "title_canon_sha256": "6a2de030a21468aa026de17aaa34aa3696824f3512f98c8bb92e7ef77778d12d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.02673",
    "kind": "arxiv",
    "version": 1
  }
}