Pith Number

pith:Q4JSFJIW

pith:2013:Q4JSFJIW3WKW7FC263GA344CAH

not attested not anchored not stored refs pending

Linear Precoder Design for MIMO Interference Channels with Finite-Alphabet Signaling

Chengshan Xiao, John D. Matyjas, Xiqi Gao, Yongpeng Wu, Zhi Ding

arxiv:1307.4815 v1 · 2013-07-18 · 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{Q4JSFJIW3WKW7FC263GA344CAH}

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	2026-05-18T00:57:56.277130Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

871322a516dd956f945af6cc0df38201c8da4355e8b80d1ce678410c34ec9973

Aliases

arxiv: 1307.4815 · arxiv_version: 1307.4815v1 · doi: 10.48550/arxiv.1307.4815 · pith_short_12: Q4JSFJIW3WKW · pith_short_16: Q4JSFJIW3WKW7FC2 · pith_short_8: Q4JSFJIW

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/Q4JSFJIW3WKW7FC263GA344CAH \
  | 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: 871322a516dd956f945af6cc0df38201c8da4355e8b80d1ce678410c34ec9973

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "374ddb7f791d7ffec2ba9d7026c50532dbeb3fdf4b00a5be38bfe6da69d350cf",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-07-18T02:40:11Z",
    "title_canon_sha256": "0ad96798be0b3860aefde5c199ce0b32da94898de3530c09df442e64b5df0a8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4815",
    "kind": "arxiv",
    "version": 1
  }
}