Pith Number

pith:SOP456TK

pith:2018:SOP456TK7ULC54YQM2B2CEZOL4

not attested not anchored not stored refs pending

Channel Hardening in Massive MIMO - A Measurement Based Analysis

Fredrik Tufvesson, Jose Flordelis, Liesbet Van der Perre, Sara Gunnarsson

arxiv:1804.01690 v2 · 2018-04-05 · cs.IT · 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{SOP456TK7ULC54YQM2B2CEZOL4}

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	2026-05-18T00:12:48.203924Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

939fcefa6afd162ef3106683a1132e5f1e948ad91aa49355824f3c868bfd543e

Aliases

arxiv: 1804.01690 · arxiv_version: 1804.01690v2 · doi: 10.48550/arxiv.1804.01690 · pith_short_12: SOP456TK7ULC · pith_short_16: SOP456TK7ULC54YQ · pith_short_8: SOP456TK

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/SOP456TK7ULC54YQM2B2CEZOL4 \
  | 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: 939fcefa6afd162ef3106683a1132e5f1e948ad91aa49355824f3c868bfd543e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b7e88855b69940cf6f868ecf728654e79ce855a85585ae3f27a579ac026f1e0",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-04-05T07:04:14Z",
    "title_canon_sha256": "0b820a6feee4ad7da8291043ba2cf2f8078dc219b405f79aa7358877b8b00bd1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01690",
    "kind": "arxiv",
    "version": 2
  }
}