Pith Number

pith:PBWAE5FU

pith:2019:PBWAE5FUA2KHFPRQDYEN2TVST5

not attested not anchored not stored refs pending

A Distributed Observer for a Discrete-Time Linear System

A. Stephen Morse, Brian D. O. Anderson, Ji Liu, Lili Wang

arxiv:1903.05486 v1 · 2019-03-13 · 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{PBWAE5FUA2KHFPRQDYEN2TVST5}

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	2026-05-17T23:51:20.792372Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

786c0274b4069472be301e08dd4eb29f63d1e083babdb164221e567aa22c0daf

Aliases

arxiv: 1903.05486 · arxiv_version: 1903.05486v1 · doi: 10.48550/arxiv.1903.05486 · pith_short_12: PBWAE5FUA2KH · pith_short_16: PBWAE5FUA2KHFPRQ · pith_short_8: PBWAE5FU

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/PBWAE5FUA2KHFPRQDYEN2TVST5 \
  | 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: 786c0274b4069472be301e08dd4eb29f63d1e083babdb164221e567aa22c0daf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9dc18f1696ccaed67180ef170cad6e45c85fe61033b57b206e8c9d1ff95ca5ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2019-03-13T13:49:19Z",
    "title_canon_sha256": "dc1a1c23dcaf3f56fdccd8207c92b18d7491dcfd215be13b52feb7213137cbd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.05486",
    "kind": "arxiv",
    "version": 1
  }
}