Pith Number

pith:45ZFUJKZ

pith:2025:45ZFUJKZJABC2335KQFQG6S27N

not attested not anchored not stored refs pending

Non-intrusive reduced-order modeling for dynamical systems with spatially localized features

Karen E. Willcox, Leonidas Gkimisis, Marco Tezzele, Nicole Aretz, Peter Benner, Thomas Richter

arxiv:2501.04400 v2 · 2025-01-08 · 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{45ZFUJKZJABC2335KQFQG6S27N}

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	2026-07-05T11:20:49.506517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7725a255948022d6f7d540b037a5afb4eb71b77029467eb680a0303616463f7

Aliases

arxiv: 2501.04400 · arxiv_version: 2501.04400v2 · doi: 10.48550/arxiv.2501.04400 · pith_short_12: 45ZFUJKZJABC · pith_short_16: 45ZFUJKZJABC2335 · pith_short_8: 45ZFUJKZ

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/45ZFUJKZJABC2335KQFQG6S27N \
  | 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: e7725a255948022d6f7d540b037a5afb4eb71b77029467eb680a0303616463f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d193bb3c6633350a00d7eb8e4ed2934b763bb366d51d0678d2a2b139535de664",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2025-01-08T10:28:31Z",
    "title_canon_sha256": "396347f660d010879522f5af20a39e65a6cf5d5c62c0c721b4bd5f8c22bfa164"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.04400",
    "kind": "arxiv",
    "version": 2
  }
}