Pith Number

pith:QLCEX57Q

pith:2011:QLCEX57QJUFNRRBFDN5MQWYDHZ

not attested not anchored not stored refs pending

Interference Mitigation for Cognitive Radio MIMO Systems Based on Practical Precoding

Cheng-Xiang Wang, Feng Zhao, Hailin Xiao, John Thompson, Sergiy A. Vorobyov, Xiaohu Ge, Xuemin Hong, Zengmao Chen

arxiv:1104.4155 v1 · 2011-04-21 · 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{QLCEX57QJUFNRRBFDN5MQWYDHZ}

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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	2026-05-18T00:58:18.992585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82c44bf7f04d0ad8c4251b7ac85b033e4aa5dfacafd8e31e08a27bea3d3581df

Aliases

arxiv: 1104.4155 · arxiv_version: 1104.4155v1 · doi: 10.48550/arxiv.1104.4155 · pith_short_12: QLCEX57QJUFN · pith_short_16: QLCEX57QJUFNRRBF · pith_short_8: QLCEX57Q

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/QLCEX57QJUFNRRBFDN5MQWYDHZ \
  | 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: 82c44bf7f04d0ad8c4251b7ac85b033e4aa5dfacafd8e31e08a27bea3d3581df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45e088e98289e28bb8c5b6da3f701992409da3b3ba41cc4c01c7357dfe06ff9b",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-04-21T01:42:27Z",
    "title_canon_sha256": "5add3823eb0df8f4c01e565aba3e088d72e7065c72f10c4c1726b73041c5fb37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4155",
    "kind": "arxiv",
    "version": 1
  }
}