Pith Number

pith:XHNABIDA

pith:2009:XHNABIDA64PQZ6ZS24LHS2ES4F

not attested not anchored not stored refs pending

Preamble-Based Channel Estimation for CP-OFDM and OFDM/OQAM Systems: A Comparative Study

Athanasios Rontogiannis, Dimitris Katselis, Eleftherios Kofidis, Sergios Theodoridis

arxiv:0910.3928 v1 · 2009-10-20 · 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{XHNABIDA64PQZ6ZS24LHS2ES4F}

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	2026-05-18T02:11:13.638736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9da00a060f71f0cfb32d716796892e14ad8bc2fd3c96f4f75949dc1eea84972

Aliases

arxiv: 0910.3928 · arxiv_version: 0910.3928v1 · doi: 10.48550/arxiv.0910.3928 · pith_short_12: XHNABIDA64PQ · pith_short_16: XHNABIDA64PQZ6ZS · pith_short_8: XHNABIDA

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/XHNABIDA64PQZ6ZS24LHS2ES4F \
  | 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: b9da00a060f71f0cfb32d716796892e14ad8bc2fd3c96f4f75949dc1eea84972

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8603d9223b6dd57a32feb29fface635b38046c0f66ff4a702a34f6af580c3ad2",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-10-20T18:10:54Z",
    "title_canon_sha256": "b0bc32b448c41e0f2feb09c00671b5cb8fc12ee824f26baa69f134f407ec8d2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.3928",
    "kind": "arxiv",
    "version": 1
  }
}