Pith Number

pith:AYCXPILR

pith:2007:AYCXPILR6YME67FON3H3AO2UGI

not attested not anchored not stored refs pending

On the Mutual Information Distribution of OFDM-Based Spatial Multiplexing: Exact Variance and Outage Approximation

Himal A. Suraweera, Iain B. Collings, Matthew R. McKay, Peter J. Smith

arxiv:0712.0042 v1 · 2007-12-01 · 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{AYCXPILR6YME67FON3H3AO2UGI}

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	2026-05-18T00:58:25.860953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

060577a171f6184f7cae6ecfb03b54322fae96e3af4a3b6656f51afd3bf0cdf1

Aliases

arxiv: 0712.0042 · arxiv_version: 0712.0042v1 · doi: 10.48550/arxiv.0712.0042 · pith_short_12: AYCXPILR6YME · pith_short_16: AYCXPILR6YME67FO · pith_short_8: AYCXPILR

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/AYCXPILR6YME67FON3H3AO2UGI \
  | 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: 060577a171f6184f7cae6ecfb03b54322fae96e3af4a3b6656f51afd3bf0cdf1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "735dc17318640d2df1f9bb6fe01decf7cfe30b9fa43c632bd815b9946a2bbea1",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "",
    "primary_cat": "cs.IT",
    "submitted_at": "2007-12-01T03:22:16Z",
    "title_canon_sha256": "0d07740e9f3fbdee418d7334976bd5d11d61b50f1cc66c3538883393ab13d756"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0712.0042",
    "kind": "arxiv",
    "version": 1
  }
}