Pith Number

pith:ZOD5QWYS

pith:2026:ZOD5QWYSKM4P72PVRGFTAJBBYU

not attested not anchored not stored refs pending

Non-intrusive nonlinear reduced-order modeling with variable projection

Charles Poussot-Vassal, Claire Sarrat, Dimitrios Xylogiannis

arxiv:2606.23077 v1 · 2026-06-22 · eess.SY · cs.SY · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZOD5QWYSKM4P72PVRGFTAJBBYU}

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	2026-06-23T03:14:09.202971Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb87d85b125338ffe9f5898b302421c517485eed166cdc4ef7072cb319ba7041

Aliases

arxiv: 2606.23077 · arxiv_version: 2606.23077v1 · doi: 10.48550/arxiv.2606.23077 · pith_short_12: ZOD5QWYSKM4P · pith_short_16: ZOD5QWYSKM4P72PV · pith_short_8: ZOD5QWYS

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/ZOD5QWYSKM4P72PVRGFTAJBBYU \
  | 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: cb87d85b125338ffe9f5898b302421c517485eed166cdc4ef7072cb319ba7041

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be5dd60ba79420ef6afd342242340a81ec53c53b4aab3491a5b206be7fe3b1e9",
    "cross_cats_sorted": [
      "cs.SY",
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2026-06-22T09:25:42Z",
    "title_canon_sha256": "1b00e6b40b38e6420a4c9e1597293ac37c89c22068277cbc70cd0d55f026a4a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.23077",
    "kind": "arxiv",
    "version": 1
  }
}