Pith Number

pith:PKF3JIVL

pith:2018:PKF3JIVL2PK4OI4J5KVCU65EEM

not attested not anchored not stored refs pending

Doppler Spread Estimation in MIMO Frequency-selective Fading Channels

Ebrahim Karami, Moe Z. Win, Mostafa Mohammadkarimi, Octavia A. Dobre

arxiv:1802.03058 v1 · 2018-02-08 · eess.SP · 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{PKF3JIVL2PK4OI4J5KVCU65EEM}

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	2026-05-18T00:24:02.131393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a8bb4a2abd3d5c72389eaaa2a7ba4233a87d50f1a0f76f235fd2ff9efaef7c9

Aliases

arxiv: 1802.03058 · arxiv_version: 1802.03058v1 · doi: 10.48550/arxiv.1802.03058 · pith_short_12: PKF3JIVL2PK4 · pith_short_16: PKF3JIVL2PK4OI4J · pith_short_8: PKF3JIVL

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/PKF3JIVL2PK4OI4J5KVCU65EEM \
  | 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: 7a8bb4a2abd3d5c72389eaaa2a7ba4233a87d50f1a0f76f235fd2ff9efaef7c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43f3b26ac05c59126c9c455a5cf0c1665ae3cb5777dfaa30ac8487ba0b21fc6f",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-02-08T21:48:09Z",
    "title_canon_sha256": "b6147e8f01ca2ec6e5cbe63318e82ebfb6e58e6904ec63ed9821801d950a42f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03058",
    "kind": "arxiv",
    "version": 1
  }
}