Pith Number

pith:U3JQXD3S

pith:2019:U3JQXD3SNKSARX6QJNCMYJBVZ7

not attested not anchored not stored refs pending

Memory-assisted Statistically-ranked RF Beam Training Algorithm for Sparse MIMO

Eckhard Grass, John S. Thompson, Krishan K. Tiwari, Rolf Kraemer

arxiv:1906.01719 v3 · 2019-06-04 · cs.IT · cs.SY · eess.SP · eess.SY · 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{U3JQXD3SNKSARX6QJNCMYJBVZ7}

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	2026-07-05T05:17:22.633074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6d30b8f726aa408dfd04b44cc2435cfce07531e74c0b1dae34137470dcd647e

Aliases

arxiv: 1906.01719 · arxiv_version: 1906.01719v3 · doi: 10.48550/arxiv.1906.01719 · pith_short_12: U3JQXD3SNKSA · pith_short_16: U3JQXD3SNKSARX6Q · pith_short_8: U3JQXD3S

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/U3JQXD3SNKSARX6QJNCMYJBVZ7 \
  | 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: a6d30b8f726aa408dfd04b44cc2435cfce07531e74c0b1dae34137470dcd647e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d035d5d1c6a65851923153a792034b860851a10bee9cccbf7986f25e41acf13c",
    "cross_cats_sorted": [
      "cs.SY",
      "eess.SP",
      "eess.SY",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-06-04T20:43:02Z",
    "title_canon_sha256": "2381c33aef645540d394439842e9d92e7c42355d7401537839bc030131c1cdc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.01719",
    "kind": "arxiv",
    "version": 3
  }
}