Pith Number

pith:AQUJVQGF

pith:2021:AQUJVQGF4OO4XUOEX576FXB6D4

not attested not anchored not stored refs pending

Double-RIS Versus Single-RIS Aided Systems: Tensor-Based MIMO Channel Estimation and Design Perspectives

Andr\'e L. F. de Almeida, Khaled Ardah, Martin Haardt, Sepideh Gherekhloo

arxiv:2109.09099 v1 · 2021-09-19 · 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{AQUJVQGF4OO4XUOEX576FXB6D4}

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	2026-07-05T03:15:41.580362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04289ac0c5e39dcbd1c4bf7fe2dc3e1f10311e7689c44f4af3d6104f53c7b532

Aliases

arxiv: 2109.09099 · arxiv_version: 2109.09099v1 · doi: 10.48550/arxiv.2109.09099 · pith_short_12: AQUJVQGF4OO4 · pith_short_16: AQUJVQGF4OO4XUOE · pith_short_8: AQUJVQGF

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/AQUJVQGF4OO4XUOEX576FXB6D4 \
  | 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: 04289ac0c5e39dcbd1c4bf7fe2dc3e1f10311e7689c44f4af3d6104f53c7b532

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fc039555fd8afc9d2baf2a045cb89b50247f7a8196c1bcdc35a142f18f7a316",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2021-09-19T10:25:18Z",
    "title_canon_sha256": "0210614f7e7489eb79b0cf93808608c8cfaaa78bb8f5fcec407be4ca6c6d9c98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.09099",
    "kind": "arxiv",
    "version": 1
  }
}