Pith Number

pith:DE5Q65PC

pith:2025:DE5Q65PC3GVZZC2W373OOXZWUV

not attested not anchored not stored refs pending

Unexplored Opportunities for Automatic Differentiation in Astrophysics

Marc Bara

arxiv:2507.09379 v1 · 2025-07-12 · astro-ph.IM · 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{DE5Q65PC3GVZZC2W373OOXZWUV}

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.

Cited by

1 paper in Pith

Observer-robust energy condition verification for warp drive spacetimes

Receipt and verification

First computed	2026-07-05T11:36:07.957890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

193b0f75e2d9ab9c8b56dff6e75f36a5507a34ce712d9cc3c227395137c08251

Aliases

arxiv: 2507.09379 · arxiv_version: 2507.09379v1 · doi: 10.48550/arxiv.2507.09379 · pith_short_12: DE5Q65PC3GVZ · pith_short_16: DE5Q65PC3GVZZC2W · pith_short_8: DE5Q65PC

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/DE5Q65PC3GVZZC2W373OOXZWUV \
  | 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: 193b0f75e2d9ab9c8b56dff6e75f36a5507a34ce712d9cc3c227395137c08251

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe8a768e260435504047c25d7c990449acf7168193262bb88d43d67af906bb29",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2025-07-12T19:04:03Z",
    "title_canon_sha256": "0bb86198d0e7ed8f2d88b3c57fbfecb333b13f45e93437235a2103554f6405c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.09379",
    "kind": "arxiv",
    "version": 1
  }
}