Pith Number

pith:3W6S6XVR

pith:2017:3W6S6XVRWHB2N6HXN3WX7T5UER

not attested not anchored not stored refs pending

A simple approach to distributed observer design for linear systems

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

arxiv:1708.01459 v1 · 2017-08-04 · 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{3W6S6XVRWHB2N6HXN3WX7T5UER}

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	2026-05-18T00:38:37.305421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddbd2f5eb1b1c3a6f8f76eed7fcfb42454c9d674aeaf3d559a54b36be637d15c

Aliases

arxiv: 1708.01459 · arxiv_version: 1708.01459v1 · doi: 10.48550/arxiv.1708.01459 · pith_short_12: 3W6S6XVRWHB2 · pith_short_16: 3W6S6XVRWHB2N6HX · pith_short_8: 3W6S6XVR

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/3W6S6XVRWHB2N6HXN3WX7T5UER \
  | 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: ddbd2f5eb1b1c3a6f8f76eed7fcfb42454c9d674aeaf3d559a54b36be637d15c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc2725903f0ab2751993735730c4c28274b3a0e00a896f98657efbd014873af8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-08-04T11:34:30Z",
    "title_canon_sha256": "147c790a25b66d874afacdf537fc0c14543136974224a13e8ac0738ec42d0fb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.01459",
    "kind": "arxiv",
    "version": 1
  }
}