Pith Number

pith:EALW52T3

pith:2014:EALW52T36K74PPOPR6GBIWIEED

not attested not anchored not stored refs pending

Power System Dynamic State Estimation by Unscented Kalman Filter with Guaranteed Positive Semidefinite State Covariance

Junjian Qi, Kai Sun

arxiv:1405.6426 v3 · 2014-05-25 · cs.IT · math.IT · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EALW52T36K74PPOPR6GBIWIEED}

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	2026-05-18T02:43:02.186108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20176eea7bf2bfc7bdcf8f8c14590420f8bdb62f8f1ad7200e766c86e6bd4269

Aliases

arxiv: 1405.6426 · arxiv_version: 1405.6426v3 · doi: 10.48550/arxiv.1405.6426 · pith_short_12: EALW52T36K74 · pith_short_16: EALW52T36K74PPOP · pith_short_8: EALW52T3

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/EALW52T36K74PPOPR6GBIWIEED \
  | 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: 20176eea7bf2bfc7bdcf8f8c14590420f8bdb62f8f1ad7200e766c86e6bd4269

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9cc689fd3531f95836ced3264ae13e944183897e369086fbc5cf59afab9f9f4",
    "cross_cats_sorted": [
      "math.IT",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2014-05-25T20:22:25Z",
    "title_canon_sha256": "935302d48f8755813b2e2c1336c776f761a3ecd2cd8f9ab071e1a628cb6a33af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6426",
    "kind": "arxiv",
    "version": 3
  }
}