Pith Number

pith:OPXN6SMD

pith:2017:OPXN6SMDDMSUIJG4AL5OFAF52Y

not attested not anchored not stored refs pending

Towards a minimal order distributed observer for linear systems

Harry L. Trentelman, Weixin Han, Yi Shen, Zhenhua Wang

arxiv:1708.02221 v1 · 2017-08-07 · 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{OPXN6SMDDMSUIJG4AL5OFAF52Y}

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	2026-05-18T00:38:31.749863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73eedf49831b254424dc02fae280bdd60ee328b10c698e0cf1776524bfacbe7d

Aliases

arxiv: 1708.02221 · arxiv_version: 1708.02221v1 · doi: 10.48550/arxiv.1708.02221 · pith_short_12: OPXN6SMDDMSU · pith_short_16: OPXN6SMDDMSUIJG4 · pith_short_8: OPXN6SMD

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/OPXN6SMDDMSUIJG4AL5OFAF52Y \
  | 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: 73eedf49831b254424dc02fae280bdd60ee328b10c698e0cf1776524bfacbe7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4cb5cc3b90c81a8ca3993885eb27842c8fe724a0246347ef7252fdd26cf07dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-08-07T17:39:34Z",
    "title_canon_sha256": "64c8fb2a5786f24f1431eeb932b3252a9becffd2e2d1ec18086755f12fa6245c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.02221",
    "kind": "arxiv",
    "version": 1
  }
}