Pith Number

pith:JNE7HDS3

pith:2022:JNE7HDS37V5PQ755SVNWFZEAFZ

not attested not anchored not stored refs pending

sympy2c: from symbolic expressions to fast C/C++ functions and ODE solvers in Python

Alexandre Refregier, Beatrice Moser, Christiane S. Lorenz, Uwe Schmitt

arxiv:2203.11945 v1 · 2022-03-22 · astro-ph.IM · astro-ph.CO · cs.MS · 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{JNE7HDS37V5PQ755SVNWFZEAFZ}

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	2026-07-05T04:07:45.690090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b49f38e5bfd7af87fbd955b62e4802e56639129c530e696d4ffeac16859e0d7

Aliases

arxiv: 2203.11945 · arxiv_version: 2203.11945v1 · doi: 10.48550/arxiv.2203.11945 · pith_short_12: JNE7HDS37V5P · pith_short_16: JNE7HDS37V5PQ755 · pith_short_8: JNE7HDS3

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/JNE7HDS37V5PQ755SVNWFZEAFZ \
  | 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: 4b49f38e5bfd7af87fbd955b62e4802e56639129c530e696d4ffeac16859e0d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6744e41bce3151931ffa9af21855df227bbb730dc4a7ac36afbaf5b9ab434e32",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "cs.MS",
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2022-03-22T15:51:55Z",
    "title_canon_sha256": "33c8693d376d9c19fd1987b269afa3284b0e211c7b0652013b749a7cebf95a5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.11945",
    "kind": "arxiv",
    "version": 1
  }
}