Pith Number

pith:OGD7C4J7

pith:2026:OGD7C4J7GXM4G2OE5UTCP5YDD5

not attested not anchored not stored refs pending

Hard Guarantees at a Measured Price: Entropy-Stable Learned Finite Volumes for Compressible Flow

Denis Gueyffier (ONERA -- Institut Polytechnique de Paris)

arxiv:2607.20171 v1 · 2026-07-22 · physics.flu-dyn · 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{OGD7C4J7GXM4G2OE5UTCP5YDD5}

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	2026-07-23T01:25:05.669012Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7187f1713f35d9c369c4ed2627f7031f7cccfef765c6a97779d3fab4bba69166

Aliases

arxiv: 2607.20171 · arxiv_version: 2607.20171v1 · doi: 10.48550/arxiv.2607.20171 · pith_short_12: OGD7C4J7GXM4 · pith_short_16: OGD7C4J7GXM4G2OE · pith_short_8: OGD7C4J7

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/OGD7C4J7GXM4G2OE5UTCP5YDD5 \
  | 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: 7187f1713f35d9c369c4ed2627f7031f7cccfef765c6a97779d3fab4bba69166

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f05f14186d5abc56de56e31fac2c8be94ade73ddd247e7abb044d634f5088ef",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2026-07-22T14:05:43Z",
    "title_canon_sha256": "8c78dd805730bd4ab2238046d22958d2bcc1108a139d64dadab7f51c14e4dd8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.20171",
    "kind": "arxiv",
    "version": 1
  }
}