Pith Number

pith:37XBQGF2

pith:2018:37XBQGF2SBWY7E6Z3FJBTXEISE

not attested not anchored not stored refs pending

Wave-optical treatment of the shadow cast by a large sphere

Slava G. Turyshev, Viktor T. Toth

arxiv:1801.06253 v3 · 2018-01-18 · physics.optics · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{37XBQGF2SBWY7E6Z3FJBTXEISE}

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	2026-05-18T00:14:53.930189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfee1818ba906d8f93d9d95219dc88911ffa51827937da68978af54e3d2fb5ae

Aliases

arxiv: 1801.06253 · arxiv_version: 1801.06253v3 · doi: 10.48550/arxiv.1801.06253 · pith_short_12: 37XBQGF2SBWY · pith_short_16: 37XBQGF2SBWY7E6Z · pith_short_8: 37XBQGF2

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/37XBQGF2SBWY7E6Z3FJBTXEISE \
  | 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: dfee1818ba906d8f93d9d95219dc88911ffa51827937da68978af54e3d2fb5ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd173bb9096a11f246608356717ccdc9d2a7282ecb61573b58bb54efbfc7fd3a",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-01-18T23:46:42Z",
    "title_canon_sha256": "8d8d200a1ddc0e0ba701dac591ea0812eaa2bc72685926e3df4b6bc22e05d1cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.06253",
    "kind": "arxiv",
    "version": 3
  }
}