Pith Number

pith:XQD54PJA

pith:2018:XQD54PJAWHB754ARCVDKMGRMBZ

not attested not anchored not stored refs pending

Permissive Barrier Certificates for Safe Stabilization Using Sum-of-squares

Dongkun Han, Li Wang, Magnus Egerstedt

arxiv:1802.08917 v1 · 2018-02-24 · 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{XQD54PJAWHB754ARCVDKMGRMBZ}

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	2026-05-18T00:22:36.045378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc07de3d20b1c3fef0111546a61a2c0e71b61f421cbed54f418cb6c576c5327e

Aliases

arxiv: 1802.08917 · arxiv_version: 1802.08917v1 · doi: 10.48550/arxiv.1802.08917 · pith_short_12: XQD54PJAWHB7 · pith_short_16: XQD54PJAWHB754AR · pith_short_8: XQD54PJA

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/XQD54PJAWHB754ARCVDKMGRMBZ \
  | 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: bc07de3d20b1c3fef0111546a61a2c0e71b61f421cbed54f418cb6c576c5327e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e17735e0adb306a62f67dbaef499e30ee42d3e5e97d6b0421c777852a29e573",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-02-24T21:31:30Z",
    "title_canon_sha256": "9141ceb7e891bdbfb8d9782ab9829ddabba2b83d89c61179e55cd43faa87ccd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.08917",
    "kind": "arxiv",
    "version": 1
  }
}