Pith Number

pith:WFTW4IGK

pith:2019:WFTW4IGK4DUGGQIR4MPWD5YKTI

not attested not anchored not stored refs pending

Multivariable analytic interpolation with complexity constraints: A modified Riccati approach

Anders Lindquist, Yufang Cui

arxiv:1903.05418 v1 · 2019-03-13 · 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{WFTW4IGK4DUGGQIR4MPWD5YKTI}

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	2026-05-17T23:51:24.329024Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1676e20cae0e8634111e31f61f70a9a2404fea582cf0a0bd11242875fbd833c

Aliases

arxiv: 1903.05418 · arxiv_version: 1903.05418v1 · doi: 10.48550/arxiv.1903.05418 · pith_short_12: WFTW4IGK4DUG · pith_short_16: WFTW4IGK4DUGGQIR · pith_short_8: WFTW4IGK

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/WFTW4IGK4DUGGQIR4MPWD5YKTI \
  | 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: b1676e20cae0e8634111e31f61f70a9a2404fea582cf0a0bd11242875fbd833c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f655b8a337cb16b9e8fce1a04638cf0aa8b3d12401fd238e2c3f42407754e9ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-03-13T11:31:40Z",
    "title_canon_sha256": "36f131f70054fa20ae97da868341a81d607545a976947c253293e3c96b494e25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.05418",
    "kind": "arxiv",
    "version": 1
  }
}