Pith Number

pith:BSWHKXRQ

pith:2017:BSWHKXRQPA5VWLQKAM7NGGZX7K

not attested not anchored not stored refs pending

Ball in double hoop: demonstration model for numerical optimal control

Ji\v{r}\'i Zem\'anek, Martin Gurtner

arxiv:1706.07333 v1 · 2017-06-22 · cs.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{BSWHKXRQPA5VWLQKAM7NGGZX7K}

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	2026-05-18T00:41:51.969994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0cac755e30783b5b2e0a033ed31b37fa879085070dfaa444b8ff982b54c332b0

Aliases

arxiv: 1706.07333 · arxiv_version: 1706.07333v1 · doi: 10.48550/arxiv.1706.07333 · pith_short_12: BSWHKXRQPA5V · pith_short_16: BSWHKXRQPA5VWLQK · pith_short_8: BSWHKXRQ

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/BSWHKXRQPA5VWLQKAM7NGGZX7K \
  | 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: 0cac755e30783b5b2e0a033ed31b37fa879085070dfaa444b8ff982b54c332b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a80ca174dd9abfc37073ef7a3b55b60c145de62efb1f4066869b4b065d84a494",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2017-06-22T14:15:19Z",
    "title_canon_sha256": "ca64c79aef0b2d8a4b70c5bbe01ab80f25f3d8cf0be0882e51ca961fdc228ed3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.07333",
    "kind": "arxiv",
    "version": 1
  }
}