Pith Number

pith:7TUSTHUD

pith:2019:7TUSTHUD3VEPUDMFXTTAEXTZ4S

not attested not anchored not stored refs pending

Power Inversion of the Massive MIMO Channel

Jens Abraham, Torbj\"orn Ekman

arxiv:1905.07555 v1 · 2019-05-18 · 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{7TUSTHUD3VEPUDMFXTTAEXTZ4S}

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	2026-05-17T23:45:49.340953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fce9299e83dd48fa0d85bce6025e79e4a7096ff81f1ca9cff47abfd2b6ad69dd

Aliases

arxiv: 1905.07555 · arxiv_version: 1905.07555v1 · doi: 10.48550/arxiv.1905.07555 · pith_short_12: 7TUSTHUD3VEP · pith_short_16: 7TUSTHUD3VEPUDMF · pith_short_8: 7TUSTHUD

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/7TUSTHUD3VEPUDMFXTTAEXTZ4S \
  | 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: fce9299e83dd48fa0d85bce6025e79e4a7096ff81f1ca9cff47abfd2b6ad69dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c77677dc3ecbe383516a896269fa7237e536b03dea9af2bc31bfef951132252",
    "cross_cats_sorted": [
      "eess.SP",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-05-18T08:43:40Z",
    "title_canon_sha256": "1051daa4bc11a5566f7ec66ae63937ad9648f53b8bb9c6b66f03c03e812dbef2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.07555",
    "kind": "arxiv",
    "version": 1
  }
}