Pith Number

pith:66DLA4V7

pith:2013:66DLA4V7VN2GYN6J5H4Y5MXFQC

not attested not anchored not stored refs pending

Spectral Efficiency and Energy Efficiency of OFDM Systems: Impact of Power Amplifiers and Countermeasures

Chin Keong Ho, Jingon Joung, Sumei Sun

arxiv:1305.3959 v1 · 2013-05-17 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{66DLA4V7VN2GYN6J5H4Y5MXFQC}

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	2026-05-18T00:57:56.375042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f786b072bfab746c37c9e9f98eb2e5809a61cbb5c4107c53ff768ef4325e9961

Aliases

arxiv: 1305.3959 · arxiv_version: 1305.3959v1 · doi: 10.48550/arxiv.1305.3959 · pith_short_12: 66DLA4V7VN2G · pith_short_16: 66DLA4V7VN2GYN6J · pith_short_8: 66DLA4V7

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/66DLA4V7VN2GYN6J5H4Y5MXFQC \
  | 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: f786b072bfab746c37c9e9f98eb2e5809a61cbb5c4107c53ff768ef4325e9961

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed54dbfdcb133bf3750dc68665debdb5ae755cbe3cb7204ed1bf49c40ac64321",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-05-17T01:27:37Z",
    "title_canon_sha256": "777becd1b60737bcb2598d025dce8c227e929cf75a1dda7c5c2c478ef7456c8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.3959",
    "kind": "arxiv",
    "version": 1
  }
}