Pith Number

pith:MMCLRRI7

pith:2011:MMCLRRI7ZITCU5G46D3ETG7C4C

not attested not anchored not stored refs pending

Retroreflector Approximation of a Generalized Eaton Lens

Sang-Hoon Kim

arxiv:1112.2754 v2 · 2011-12-13 · 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{MMCLRRI7ZITCU5G46D3ETG7C4C}

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	2026-05-18T01:59:11.226449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6304b8c51fca262a74dcf0f6499be2e0bade1078c2f6ce4b588f9b9e759b8339

Aliases

arxiv: 1112.2754 · arxiv_version: 1112.2754v2 · doi: 10.48550/arxiv.1112.2754 · pith_short_12: MMCLRRI7ZITC · pith_short_16: MMCLRRI7ZITCU5G4 · pith_short_8: MMCLRRI7

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/MMCLRRI7ZITCU5G46D3ETG7C4C \
  | 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: 6304b8c51fca262a74dcf0f6499be2e0bade1078c2f6ce4b588f9b9e759b8339

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0d4b02489750cb6601648263ca6c0981f339343bf293e66c293972a6fb6fdd4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2011-12-13T00:14:33Z",
    "title_canon_sha256": "3621f44b1912c08fb6c13362961b40d473d76f23e4bec5eacdb2d345889448cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.2754",
    "kind": "arxiv",
    "version": 2
  }
}