Pith Number

pith:U77XKQGG

pith:2025:U77XKQGGU7FAZO4RFF6SJHIIBN

not attested not anchored not stored refs pending

Joint Spatial and Spectral Hybrid Precoding for Multi-User MIMO-OFDM Systems

Emil Bj\"ornson, Navid Reyhanian, Parisa Ramezani, Reza Ghaderi Zefreh

arxiv:2509.07229 v3 · 2025-09-08 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U77XKQGGU7FAZO4RFF6SJHIIBN}

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	2026-06-02T02:04:08.688692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7ff7540c6a7ca0cbb91297d249d080b4867e2663681903f926539b3d485615c

Aliases

arxiv: 2509.07229 · arxiv_version: 2509.07229v3 · doi: 10.48550/arxiv.2509.07229 · pith_short_12: U77XKQGGU7FA · pith_short_16: U77XKQGGU7FAZO4R · pith_short_8: U77XKQGG

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/U77XKQGGU7FAZO4RFF6SJHIIBN \
  | 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: a7ff7540c6a7ca0cbb91297d249d080b4867e2663681903f926539b3d485615c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcff97d63466c7873b501383f396e7a1f007916b082e4ac31479b0cbd5c34a86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2025-09-08T21:15:58Z",
    "title_canon_sha256": "6d6dd95763d9555dcd9a81b7b8eb74f8e462c2e30189cf2987a49f52cb9ad39a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.07229",
    "kind": "arxiv",
    "version": 3
  }
}