Pith Number

pith:SEDJ5B4O

pith:2025:SEDJ5B4O5CE6PDPFARM5NZWQZJ

not attested not anchored not stored refs pending

Degrees of Freedom of Holographic MIMO -- Fundamental Theory and Analytical Methods

Juan Carlos Ruiz-Sicilia, Marco Di Renzo, Merouane Debbah, Placido Mursia, Vincenzo Sciancalepore

arxiv:2504.13031 v1 · 2025-04-17 · cs.IT · eess.SP · 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{SEDJ5B4O5CE6PDPFARM5NZWQZJ}

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	2026-07-05T11:21:45.699483Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91069e878ee889e78de50459d6e6d0ca434444da64d0048edf3a33b429ac43bf

Aliases

arxiv: 2504.13031 · arxiv_version: 2504.13031v1 · doi: 10.48550/arxiv.2504.13031 · pith_short_12: SEDJ5B4O5CE6 · pith_short_16: SEDJ5B4O5CE6PDPF · pith_short_8: SEDJ5B4O

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/SEDJ5B4O5CE6PDPFARM5NZWQZJ \
  | 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: 91069e878ee889e78de50459d6e6d0ca434444da64d0048edf3a33b429ac43bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25fc6eb3c6ee9fb228cb3b14000d33be988138b8675b17386f6f16235f3332de",
    "cross_cats_sorted": [
      "eess.SP",
      "math.IT"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2025-04-17T15:41:28Z",
    "title_canon_sha256": "1cd0328c36681d6910dca883666d17b62ab942233346ce5fb86ff425f793cab6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.13031",
    "kind": "arxiv",
    "version": 1
  }
}