Pith Number

pith:UPKTFNKU

pith:2021:UPKTFNKUEJWWV7SBCNIHAOYJ7A

not attested not anchored not stored refs pending

Beam Focusing for Near-Field Multi-User MIMO Communications

Davide Dardari, Francesco Guidi, Haiyang Zhang, Mohammadreza F. Imani, Nir Shlezinger, Yonina C. Eldar

arxiv:2105.13087 v1 · 2021-05-27 · 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{UPKTFNKUEJWWV7SBCNIHAOYJ7A}

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	2026-07-05T02:43:57.450972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3d532b554226d6afe411350703b09f80c9ee61752f97fdf8eddfed723209ad3

Aliases

arxiv: 2105.13087 · arxiv_version: 2105.13087v1 · doi: 10.48550/arxiv.2105.13087 · pith_short_12: UPKTFNKUEJWW · pith_short_16: UPKTFNKUEJWWV7SB · pith_short_8: UPKTFNKU

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/UPKTFNKUEJWWV7SBCNIHAOYJ7A \
  | 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: a3d532b554226d6afe411350703b09f80c9ee61752f97fdf8eddfed723209ad3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46f996bfa527d4fabeb2dcfe25dc267949ae8c83cb5c490d534bf0b40c6b7ab2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2021-05-27T12:17:30Z",
    "title_canon_sha256": "910e4ccacbde331292b49fa66798693383b40061d874b179f74786a304c43584"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.13087",
    "kind": "arxiv",
    "version": 1
  }
}