Pith Number

pith:HKXCG4OY

pith:2014:HKXCG4OYLUDUVYTJZ7BSFC2IGE

not attested not anchored not stored refs pending

The simplest example of the use of the method of images

Antonio S. de Castro

arxiv:1405.2903 v1 · 2014-05-11 · physics.class-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{HKXCG4OYLUDUVYTJZ7BSFC2IGE}

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	2026-05-18T02:51:58.249379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3aae2371d85d074ae269cfc3228b48312ff3f16c5f04be92f7556a0f3c619e98

Aliases

arxiv: 1405.2903 · arxiv_version: 1405.2903v1 · doi: 10.48550/arxiv.1405.2903 · pith_short_12: HKXCG4OYLUDU · pith_short_16: HKXCG4OYLUDUVYTJ · pith_short_8: HKXCG4OY

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/HKXCG4OYLUDUVYTJZ7BSFC2IGE \
  | 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: 3aae2371d85d074ae269cfc3228b48312ff3f16c5f04be92f7556a0f3c619e98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98dcd9c74b28b560a68239c281c56c9a8b764bb350ea73147b5a406f262e3b85",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2014-05-11T12:38:53Z",
    "title_canon_sha256": "24b26d2972a00297259c060b7aa3944a872d3400412c6edc46d3dc29afbbae65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.2903",
    "kind": "arxiv",
    "version": 1
  }
}