Pith Number

pith:2DOQDYEB

pith:2017:2DOQDYEBYBPWHIJP353B4IT764

not attested not anchored not stored refs pending

Quadratic obstructions to small-time local controllability for scalar-input differential systems

Fr\'ed\'eric Marbach, Karine Beauchard

arxiv:1705.07991 v1 · 2017-05-22 · math.OC · math.CA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2DOQDYEBYBPWHIJP353B4IT764}

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	2026-05-18T00:44:03.916422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0dd01e081c05f63a12fdf761e227ff71314d5e5281e53d3c6e0af991a9a30e8

Aliases

arxiv: 1705.07991 · arxiv_version: 1705.07991v1 · doi: 10.48550/arxiv.1705.07991 · pith_short_12: 2DOQDYEBYBPW · pith_short_16: 2DOQDYEBYBPWHIJP · pith_short_8: 2DOQDYEB

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/2DOQDYEBYBPWHIJP353B4IT764 \
  | 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: d0dd01e081c05f63a12fdf761e227ff71314d5e5281e53d3c6e0af991a9a30e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "048b9ce598076f19210c217900d7f215fcea619ec4b409b7be0b3527ad14dc28",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-05-22T20:45:25Z",
    "title_canon_sha256": "2098dd2e194089edaf265ea929d5b195eba1f05fb85172a52e752ed0d9ed28ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.07991",
    "kind": "arxiv",
    "version": 1
  }
}