Pith Number

pith:VJ37Z2NQ

pith:2015:VJ37Z2NQBXYGJLSXRBUNP4UTYB

not attested not anchored not stored refs pending

On Kalman-Like Finite Impulse Response Filters

Lubin Chang

arxiv:1501.07132 v1 · 2015-01-27 · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VJ37Z2NQBXYGJLSXRBUNP4UTYB}

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	2026-05-18T02:28:30.138688Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa77fce9b00df064ae578868d7f293c045240bf2d21dc509df615530b5a5e354

Aliases

arxiv: 1501.07132 · arxiv_version: 1501.07132v1 · doi: 10.48550/arxiv.1501.07132 · pith_short_12: VJ37Z2NQBXYG · pith_short_16: VJ37Z2NQBXYGJLSX · pith_short_8: VJ37Z2NQ

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/VJ37Z2NQBXYGJLSXRBUNP4UTYB \
  | 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: aa77fce9b00df064ae578868d7f293c045240bf2d21dc509df615530b5a5e354

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0db01739840d3e6988dd4fc175b2325458351803b5053d84471da9db5144439",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2015-01-27T11:48:04Z",
    "title_canon_sha256": "4588d7769096c0f98a9199e596faa6d0929e9f4d3b8c061e19a666b035daf2ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.07132",
    "kind": "arxiv",
    "version": 1
  }
}