Pith Number

pith:UW7GWUNZ

pith:2016:UW7GWUNZFYOMWT5OIVAZBAQ74E

not attested not anchored not stored refs pending

An Efficient Algorithm for Periodic Riccati Equation for Spacecraft Attitude Control Using Magnetic Torques

Yaguang Yang

arxiv:1601.01990 v1 · 2016-01-08 · 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{UW7GWUNZFYOMWT5OIVAZBAQ74E}

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	2026-05-18T00:52:17.602744Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5be6b51b92e1ccb4fae454190821fe103e825e9160e32f876346114ba896b4c

Aliases

arxiv: 1601.01990 · arxiv_version: 1601.01990v1 · doi: 10.48550/arxiv.1601.01990 · pith_short_12: UW7GWUNZFYOM · pith_short_16: UW7GWUNZFYOMWT5O · pith_short_8: UW7GWUNZ

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/UW7GWUNZFYOMWT5OIVAZBAQ74E \
  | 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: a5be6b51b92e1ccb4fae454190821fe103e825e9160e32f876346114ba896b4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c90736062108e6618b9eed8088334a0ab77a484a021aa72f7a9de9af5dcfbee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-01-08T19:38:51Z",
    "title_canon_sha256": "0a42db3808b4d75eb544305b243f41dde97d949b94ec8707fd35f544fb8f6435"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.01990",
    "kind": "arxiv",
    "version": 1
  }
}