Pith Number

pith:WP62FXFR

pith:2014:WP62FXFRCOLDK4BJF3NBXBLBQE

not attested not anchored not stored refs pending

A max-plus dual space fundamental solution for a class of operator differential Riccati equations

Peter M. Dower, William M. McEneaney

arxiv:1404.7209 v2 · 2014-04-29 · 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{WP62FXFRCOLDK4BJF3NBXBLBQE}

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	2026-05-18T02:03:45.396349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3fda2dcb113963570292eda1b85618129651490e9e31ebacb199ba2c20c1495

Aliases

arxiv: 1404.7209 · arxiv_version: 1404.7209v2 · doi: 10.48550/arxiv.1404.7209 · pith_short_12: WP62FXFRCOLD · pith_short_16: WP62FXFRCOLDK4BJ · pith_short_8: WP62FXFR

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/WP62FXFRCOLDK4BJF3NBXBLBQE \
  | 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: b3fda2dcb113963570292eda1b85618129651490e9e31ebacb199ba2c20c1495

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09eb1ef363eeb29b16278d34c97e5070d6a1cf335ab9f55b285f7815bf355425",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-04-29T01:49:47Z",
    "title_canon_sha256": "2d11e2b756bb2839ec1dd4d95bb7e5b9737470824fa80c79d8bdc85d066ddd66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.7209",
    "kind": "arxiv",
    "version": 2
  }
}