Pith Number

pith:B6FQK432

pith:2021:B6FQK432B3VJ2ZZ5OGOLECGYF2

not attested not anchored not stored refs pending

Enhancing interval observers for state estimation using constraints

Paul I. Barton, Stuart M. Harwood

arxiv:2110.11546 v1 · 2021-10-22 · 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{B6FQK432B3VJ2ZZ5OGOLECGYF2}

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	2026-07-05T03:24:48.625174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f8b05737a0eea9d673d719cb208d82eba9c32df98b4e66efce1ef910ab178fe

Aliases

arxiv: 2110.11546 · arxiv_version: 2110.11546v1 · doi: 10.48550/arxiv.2110.11546 · pith_short_12: B6FQK432B3VJ · pith_short_16: B6FQK432B3VJ2ZZ5 · pith_short_8: B6FQK432

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/B6FQK432B3VJ2ZZ5OGOLECGYF2 \
  | 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: 0f8b05737a0eea9d673d719cb208d82eba9c32df98b4e66efce1ef910ab178fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c9da34a569ca87fcc05af8ac1001f6f0cf5931a86699072f8f806d54a25fa62",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-10-22T01:10:25Z",
    "title_canon_sha256": "18c7e78f6057d1d59f25c2d8c2a611a62dd4412e5b1c3e1c5d41139d75b9e44d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.11546",
    "kind": "arxiv",
    "version": 1
  }
}