Pith Number

pith:4GF5TMAW

pith:2025:4GF5TMAWPJYZISZ7PCKNMQ7GD7

not attested not anchored not stored refs pending

Synthesis of Discrete-time Control Barrier Functions for Polynomial Systems Based on Sum-of-Squares Programming

Alexander Katriniok, Erfan Shakhesi, W.P.M.H. Heemels

arxiv:2504.19330 v2 · 2025-04-27 · math.OC · cs.SY · eess.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{4GF5TMAWPJYZISZ7PCKNMQ7GD7}

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	2026-07-05T10:55:35.651106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e18bd9b0167a71944b3f7894d643e61ff26e49aef1ad347138e074305e255a35

Aliases

arxiv: 2504.19330 · arxiv_version: 2504.19330v2 · doi: 10.48550/arxiv.2504.19330 · pith_short_12: 4GF5TMAWPJYZ · pith_short_16: 4GF5TMAWPJYZISZ7 · pith_short_8: 4GF5TMAW

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/4GF5TMAWPJYZISZ7PCKNMQ7GD7 \
  | 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: e18bd9b0167a71944b3f7894d643e61ff26e49aef1ad347138e074305e255a35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9df91b34ed89d7636260b22786a8edd2035e8b2391ec04a59c6dfc0bb10d14e2",
    "cross_cats_sorted": [
      "cs.SY",
      "eess.SY"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2025-04-27T18:59:43Z",
    "title_canon_sha256": "1dfd53a18673d940efcd94b35150688933c05ca81a3f71e799f3bfa9fa386bb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.19330",
    "kind": "arxiv",
    "version": 2
  }
}