Pith Number

pith:6JTRTRLD

pith:2014:6JTRTRLDQGPYIMHGW6L222WECO

not attested not anchored not stored refs pending

Fast Kalman Filter using Hierarchical-matrices and low-rank perturbative approach

Arvind K. Saibaba, Eric Miller, Peter K. Kitanidis

arxiv:1405.2276 v2 · 2014-05-09 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6JTRTRLDQGPYIMHGW6L222WECO}

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	2026-05-18T02:14:18.064930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f26719c563819f8430e6b797ad6ac413bb632612887b7535b4d50115e3898e4c

Aliases

arxiv: 1405.2276 · arxiv_version: 1405.2276v2 · doi: 10.48550/arxiv.1405.2276 · pith_short_12: 6JTRTRLDQGPY · pith_short_16: 6JTRTRLDQGPYIMHG · pith_short_8: 6JTRTRLD

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/6JTRTRLDQGPYIMHGW6L222WECO \
  | 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: f26719c563819f8430e6b797ad6ac413bb632612887b7535b4d50115e3898e4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2be26edd9ffa0aea22abeaadfdbaf3988a4b6d8178c92654135829016900a378",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-05-09T16:11:45Z",
    "title_canon_sha256": "164d954c60962207304e56411e43bf73ff422a623d9cff43b5925c6fdaa4bf40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.2276",
    "kind": "arxiv",
    "version": 2
  }
}