Pith Number

pith:XKAXLGGQ

pith:2019:XKAXLGGQAMJUO3VVD6NLKSTL4B

not attested not anchored not stored refs pending

Learning Sparse Dynamical Systems from a Single Sample Trajectory

Nikolai Matni, Salar Fattahi, Somayeh Sojoudi

arxiv:1904.09396 v1 · 2019-04-20 · cs.SY · math.OC · 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{XKAXLGGQAMJUO3VVD6NLKSTL4B}

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	2026-05-17T23:48:07.206092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba817598d00313476eb51f9ab54a6be04e9a048bd28dbd6ba5354818d885036f

Aliases

arxiv: 1904.09396 · arxiv_version: 1904.09396v1 · doi: 10.48550/arxiv.1904.09396 · pith_short_12: XKAXLGGQAMJU · pith_short_16: XKAXLGGQAMJUO3VV · pith_short_8: XKAXLGGQ

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/XKAXLGGQAMJUO3VVD6NLKSTL4B \
  | 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: ba817598d00313476eb51f9ab54a6be04e9a048bd28dbd6ba5354818d885036f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fb5223cc65ddc0f0dd8c9618feb4a241bf15c60710a3c600f843638ffbcbbfa",
    "cross_cats_sorted": [
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2019-04-20T03:52:23Z",
    "title_canon_sha256": "8b5539056122a88bea0731fbf6b9d44a6efc3d7a9e6cf1f3c99048cba69e67ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09396",
    "kind": "arxiv",
    "version": 1
  }
}