Pith Number

pith:D5SE7DYU

pith:2017:D5SE7DYUQNADHHYO4OPAFNZNNQ

not attested not anchored not stored refs pending

Model Reduction For Parametrized Optimal Control Problems in Environmental Marine Sciences and Engineering

Francesco Ballarin, Gianluigi Rozza, Maria Strazzullo, Renzo Mosetti

arxiv:1710.01640 v2 · 2017-10-04 · math.NA · cs.NA · 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{D5SE7DYUQNADHHYO4OPAFNZNNQ}

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	2026-06-04T19:11:03.217369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f644f8f148340339f0ee39e02b72d6c3508699a68566514a19893af7826e5b2

Aliases

arxiv: 1710.01640 · arxiv_version: 1710.01640v2 · doi: 10.48550/arxiv.1710.01640 · pith_short_12: D5SE7DYUQNAD · pith_short_16: D5SE7DYUQNADHHYO · pith_short_8: D5SE7DYU

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/D5SE7DYUQNADHHYO4OPAFNZNNQ \
  | 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: 1f644f8f148340339f0ee39e02b72d6c3508699a68566514a19893af7826e5b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a822c332edcf9a07640f4535c466238977a6bddd4cb2bb51f4d782fe5b3468b",
    "cross_cats_sorted": [
      "cs.NA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-10-04T14:56:33Z",
    "title_canon_sha256": "0dc74d681e69ea02e0198423a33d66bab599ac263e62f90a4ed67643fa341cf1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.01640",
    "kind": "arxiv",
    "version": 2
  }
}