Pith Number

pith:Q5HUOJSB

pith:2023:Q5HUOJSBWWZWNIIKMPMPFRP7E3

not attested not anchored not stored refs pending

Learning physics-based reduced-order models from data using nonlinear manifolds

Karen Willcox, Laura Balzano, Rudy Geelen, Stephen Wright

arxiv:2308.02802 v2 · 2023-08-05 · math.NA · cs.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{Q5HUOJSBWWZWNIIKMPMPFRP7E3}

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	2026-05-27T02:04:59.687679Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

874f472641b5b366a10a63d8f2c5ff26e4305a23db38e44a285b00b91fbb4908

Aliases

arxiv: 2308.02802 · arxiv_version: 2308.02802v2 · doi: 10.48550/arxiv.2308.02802 · pith_short_12: Q5HUOJSBWWZW · pith_short_16: Q5HUOJSBWWZWNIIK · pith_short_8: Q5HUOJSB

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/Q5HUOJSBWWZWNIIKMPMPFRP7E3 \
  | 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: 874f472641b5b366a10a63d8f2c5ff26e4305a23db38e44a285b00b91fbb4908

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f730bf325855ee679986574eea73ed5eac4115355f74edd81b776abfc3757cab",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2023-08-05T06:22:04Z",
    "title_canon_sha256": "9f2729b75730a8346e8c65af2c44f8a4b13dd6eb6edb28a649c7143aef621717"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2308.02802",
    "kind": "arxiv",
    "version": 2
  }
}