Pith Number

pith:RKEVPVUL

pith:2023:RKEVPVULOUGWSFEH5KLG4ZTN7L

not attested not anchored not stored refs pending

Invariant preservation in machine learned PDE solvers via error correction

Ammar Hakim, Nick McGreivy

arxiv:2303.16110 v2 · 2023-03-28 · math.NA · cs.LG · cs.NA · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RKEVPVULOUGWSFEH5KLG4ZTN7L}

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	2026-07-05T05:56:04.408959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a8957d68b750d691487ea966e666dfacf12c6e71280bd04ada096d295d9ab3c

Aliases

arxiv: 2303.16110 · arxiv_version: 2303.16110v2 · doi: 10.48550/arxiv.2303.16110 · pith_short_12: RKEVPVULOUGW · pith_short_16: RKEVPVULOUGWSFEH · pith_short_8: RKEVPVUL

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/RKEVPVULOUGWSFEH5KLG4ZTN7L \
  | 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: 8a8957d68b750d691487ea966e666dfacf12c6e71280bd04ada096d295d9ab3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eebae653ca3a6303d7b7ced6d3f204ed23d90b2d2f37189d0182b75726942b79",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2023-03-28T16:26:37Z",
    "title_canon_sha256": "4ae1d1f7a23b52fcc7b046bd8a1d06ab4276fda14ebd2ab923e79d6770988d75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.16110",
    "kind": "arxiv",
    "version": 2
  }
}