Pith Number

pith:MQJVDBRD

pith:2021:MQJVDBRD4QWSNVVBVAT3U3Z4XT

not attested not anchored not stored refs pending

A Survey on Channel Estimation and Practical Passive Beamforming Design for Intelligent Reflecting Surface Aided Wireless Communications

Beixiong Zheng, Changsheng You, Rui Zhang, Weidong Mei

arxiv:2110.01292 v3 · 2021-10-04 · cs.IT · cs.ET · 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{MQJVDBRD4QWSNVVBVAT3U3Z4XT}

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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	2026-07-05T03:53:06.075635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6413518623e42d26d6a1a827ba6f3cbcc3d12240933596b87113e953c3845112

Aliases

arxiv: 2110.01292 · arxiv_version: 2110.01292v3 · doi: 10.48550/arxiv.2110.01292 · pith_short_12: MQJVDBRD4QWS · pith_short_16: MQJVDBRD4QWSNVVB · pith_short_8: MQJVDBRD

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/MQJVDBRD4QWSNVVBVAT3U3Z4XT \
  | 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: 6413518623e42d26d6a1a827ba6f3cbcc3d12240933596b87113e953c3845112

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a973ef026f613d28d6c41b7eba80293f72b9467cdfe4b383a70bd34de1220639",
    "cross_cats_sorted": [
      "cs.ET",
      "eess.SP",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2021-10-04T09:58:57Z",
    "title_canon_sha256": "665932b825fd479a1a0e1b9f10cde141248546a8aedd82204529825a5219527d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.01292",
    "kind": "arxiv",
    "version": 3
  }
}