Pith Number

pith:OP64YVD7

pith:2018:OP64YVD7ZHZD3SGIPUY3SI3N4W

not attested not anchored not stored refs pending

System Identification and $H_\infty$-based Control of Quadrotor Attitude

Ali Noormohammadi-Asl, Hamid D. Taghirad, Mojtaba Ahangar, Omid Esrafilian

arxiv:1812.10931 v2 · 2018-12-28 · 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{OP64YVD7ZHZD3SGIPUY3SI3N4W}

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	2026-07-05T00:11:46.355194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73fdcc547fc9f23dc8c87d31b9236de5b9fde4f0ad664a0c5652572d3ffd1703

Aliases

arxiv: 1812.10931 · arxiv_version: 1812.10931v2 · doi: 10.48550/arxiv.1812.10931 · pith_short_12: OP64YVD7ZHZD · pith_short_16: OP64YVD7ZHZD3SGI · pith_short_8: OP64YVD7

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/OP64YVD7ZHZD3SGIPUY3SI3N4W \
  | 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: 73fdcc547fc9f23dc8c87d31b9236de5b9fde4f0ad664a0c5652572d3ffd1703

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c4d638ff2fc0abe6fb173314b0d8fa79f729d23fdd5fbaa7b1b35bba8331c32",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-12-28T09:13:37Z",
    "title_canon_sha256": "85417706fcc9a5f3d852b5e47cb0b250bfaae71089990cabb4bd62384e035e72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.10931",
    "kind": "arxiv",
    "version": 2
  }
}