Pith Number

pith:EUMM22GZ

pith:2012:EUMM22GZ2G4JH4OYWXTTGAKBUP

not attested not anchored not stored refs pending

On Robustness in the Gap Metric and Coprime Factor Uncertainty for LTV Systems

Seddik M. Djouadi

arxiv:1207.6743 v1 · 2012-07-29 · 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{EUMM22GZ2G4JH4OYWXTTGAKBUP}

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	2026-05-18T03:49:48.865132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2518cd68d9d1b893f1d8b5e7330141a3c435ea16acab54d18c6f18c4cad7bacf

Aliases

arxiv: 1207.6743 · arxiv_version: 1207.6743v1 · doi: 10.48550/arxiv.1207.6743 · pith_short_12: EUMM22GZ2G4J · pith_short_16: EUMM22GZ2G4JH4OY · pith_short_8: EUMM22GZ

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/EUMM22GZ2G4JH4OYWXTTGAKBUP \
  | 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: 2518cd68d9d1b893f1d8b5e7330141a3c435ea16acab54d18c6f18c4cad7bacf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "099723612a7989755a70c4704de4040c3a997c83c1bd8bcf8746532a891c1a19",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-07-29T04:23:01Z",
    "title_canon_sha256": "8e25f4887598c48b3d40b25d16ed4b4f180534314860fe145499c5158f44b2b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.6743",
    "kind": "arxiv",
    "version": 1
  }
}