Pith Number

pith:6YUA5IJE

pith:2017:6YUA5IJEARWFVDLFNGNQC37P4D

not attested not anchored not stored refs pending

On the possibility of superluminal energy propagation in a hyperbolic metamaterial of metal-dielectric layers

Jie-Luen Wu, Pi-Gang Luan

arxiv:1712.09893 v1 · 2017-12-28 · physics.optics · 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{6YUA5IJEARWFVDLFNGNQC37P4D}

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	2026-05-18T00:26:07.287998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6280ea124046c5a8d65699b016fefe0e9a568248e3ad741e83a5ba536fe2ec4

Aliases

arxiv: 1712.09893 · arxiv_version: 1712.09893v1 · doi: 10.48550/arxiv.1712.09893 · pith_short_12: 6YUA5IJEARWF · pith_short_16: 6YUA5IJEARWFVDLF · pith_short_8: 6YUA5IJE

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/6YUA5IJEARWFVDLFNGNQC37P4D \
  | 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: f6280ea124046c5a8d65699b016fefe0e9a568248e3ad741e83a5ba536fe2ec4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c81c705f4495a83b836b088a6baf78dd3caf28e889b75cab5241a39b81f9e467",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-12-28T15:20:34Z",
    "title_canon_sha256": "1b36b7c25a04b6a4c9bc5eb34e272e2244ee0b66f27f0470699bf03cf23aec3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.09893",
    "kind": "arxiv",
    "version": 1
  }
}