Pith Number

pith:24634WTY

pith:2012:24634WTYTRCOTVNKFPUDW52KOP

not attested not anchored not stored refs pending

Emitter near an arbitrary body: Purcell effect, optical theorem and the Wheeler-Feynman absorber

Murugesan Venkatapathi

arxiv:1204.4555 v1 · 2012-04-20 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{24634WTYTRCOTVNKFPUDW52KOP}

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	2026-05-18T01:57:48.312153Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d73dbe5a789c44e9d5aa2be83b774a73e05135d6d4fd03f701bc5ea310d3437b

Aliases

arxiv: 1204.4555 · arxiv_version: 1204.4555v1 · doi: 10.48550/arxiv.1204.4555 · pith_short_12: 24634WTYTRCO · pith_short_16: 24634WTYTRCOTVNK · pith_short_8: 24634WTY

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/24634WTYTRCOTVNKFPUDW52KOP \
  | 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: d73dbe5a789c44e9d5aa2be83b774a73e05135d6d4fd03f701bc5ea310d3437b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0335c67d39a867ad812747edc436ab316377487f34b0df6188886bcf17b265f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-04-20T08:11:53Z",
    "title_canon_sha256": "130d7e5551e23f7eb37034876c89428fc865f5cdfba45349f09cecc605661320"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4555",
    "kind": "arxiv",
    "version": 1
  }
}