Pith Number

pith:5ZYYA73R

pith:2019:5ZYYA73RFCLVYQIT7NW3DMMVMY

not attested not anchored not stored refs pending

On the Ball-Marsden-Slemrod obstruction for bilinear control systems

IECL), Marco Caponigro (M2N), Nabile Boussaid (LMB), Thomas Chambrion (SPHINX

arxiv:1903.05846 v1 · 2019-03-14 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5ZYYA73RFCLVYQIT7NW3DMMVMY}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-17T23:51:16.002695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee71807f7128975c4113fb6db1b19566343719804a3f4c46b28e8947e84cc30e

Aliases

arxiv: 1903.05846 · arxiv_version: 1903.05846v1 · doi: 10.48550/arxiv.1903.05846 · pith_short_12: 5ZYYA73RFCLV · pith_short_16: 5ZYYA73RFCLVYQIT · pith_short_8: 5ZYYA73R

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/5ZYYA73RFCLVYQIT7NW3DMMVMY \
  | 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: ee71807f7128975c4113fb6db1b19566343719804a3f4c46b28e8947e84cc30e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abac569743d2e5a446ce34d2d67c10b6033b7826c301347b1fe524e9ef23448f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-03-14T08:05:05Z",
    "title_canon_sha256": "500df42355d8b76432057e8bc4033188d2c89a39d7b95c5ead820b329a7d224f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.05846",
    "kind": "arxiv",
    "version": 1
  }
}