Pith Number

pith:BIBHDZQ6

pith:2017:BIBHDZQ64JNXSZ6PRUQ7N2NZWM

not attested not anchored not stored refs pending

Multiscale differential Riccati equations for linear quadratic regulator problems

Anna Persson, Axel M{\aa}lqvist, Tony Stillfjord

arxiv:1706.04380 v3 · 2017-06-14 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BIBHDZQ64JNXSZ6PRUQ7N2NZWM}

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	2026-05-18T00:08:23.652416Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a0271e61ee25b7967cf8d21f6e9b9b30bf40ca87def46abafbadba11eb5075a

Aliases

arxiv: 1706.04380 · arxiv_version: 1706.04380v3 · doi: 10.48550/arxiv.1706.04380 · pith_short_12: BIBHDZQ64JNX · pith_short_16: BIBHDZQ64JNXSZ6P · pith_short_8: BIBHDZQ6

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/BIBHDZQ64JNXSZ6PRUQ7N2NZWM \
  | 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: 0a0271e61ee25b7967cf8d21f6e9b9b30bf40ca87def46abafbadba11eb5075a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f0e23f714dc87e52d3ae202552aeda83892eee9661f792e6495fb6527f19e9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-06-14T09:38:36Z",
    "title_canon_sha256": "bbf9526790052bcd1887a28d550a208c5e1c304b2effed906d3deb5929137bc1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.04380",
    "kind": "arxiv",
    "version": 3
  }
}