Pith Number

pith:CS75W5HK

pith:2025:CS75W5HKOBEFHYWSN3MNQOF2KS

not attested not anchored not stored refs pending

Physically consistent predictive reduced-order modeling by enhancing Operator Inference with state constraints

Boris Kramer, Hyeonghun Kim

arxiv:2502.03672 v2 · 2025-02-05 · physics.comp-ph · cs.LG · cs.NA · math.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{CS75W5HKOBEFHYWSN3MNQOF2KS}

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	2026-05-17T23:39:01.546084Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14bfdb74ea704853e2d26ed8d838ba54920cdc0e7651489229985dbb7cfc7f16

Aliases

arxiv: 2502.03672 · arxiv_version: 2502.03672v2 · doi: 10.48550/arxiv.2502.03672 · pith_short_12: CS75W5HKOBEF · pith_short_16: CS75W5HKOBEFHYWS · pith_short_8: CS75W5HK

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/CS75W5HKOBEFHYWSN3MNQOF2KS \
  | 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: 14bfdb74ea704853e2d26ed8d838ba54920cdc0e7651489229985dbb7cfc7f16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1808c3c3318a1da73295a77738616276f88519dbb97c1ceb1a5baf5d19e4d41b",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2025-02-05T23:33:31Z",
    "title_canon_sha256": "df44c2cd290e49ff7b552e137372384acee478d0a118120cb6863576353639f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.03672",
    "kind": "arxiv",
    "version": 2
  }
}