Pith Number

pith:TGEZBFR2

pith:2018:TGEZBFR2NVJSHH7ODWUPSX3D5H

not attested not anchored not stored refs pending

Beam with Adaptive Divergence Angle in Free-Space Optical Communications for High-Speed Trains

Jianghua Feng, Mengchu Zhou, Nirwan Ansari, Roberto Rojas-Cessa, Sina Fathi-Kazerooni, Tairan Zhang, Yagiz Kaymak

arxiv:1812.11233 v1 · 2018-12-28 · eess.SP · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TGEZBFR2NVJSHH7ODWUPSX3D5H}

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	2026-05-17T23:57:12.495156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

998990963a6d53239fee1da8f95f63e9e7dbd03a97e27876828d7c5a92ad0704

Aliases

arxiv: 1812.11233 · arxiv_version: 1812.11233v1 · doi: 10.48550/arxiv.1812.11233 · pith_short_12: TGEZBFR2NVJS · pith_short_16: TGEZBFR2NVJSHH7O · pith_short_8: TGEZBFR2

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/TGEZBFR2NVJSHH7ODWUPSX3D5H \
  | 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: 998990963a6d53239fee1da8f95f63e9e7dbd03a97e27876828d7c5a92ad0704

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c806836740034837d1835713a80f8d7ab6b58b7db9873f818a4f578b6c3025f2",
    "cross_cats_sorted": [
      "cs.NI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-12-28T22:00:22Z",
    "title_canon_sha256": "16d5836e7fd2e003661a61985e397b0eb91e9df4bc5d1c8f3f53dd340377829b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.11233",
    "kind": "arxiv",
    "version": 1
  }
}