Pith Number

pith:H4GMZDD5

pith:2013:H4GMZDD5QIR7BPOAT4JUSE5MJ2

not attested not anchored not stored refs pending

DVB-S2 Spectrum Efficiency Improvement with Hierarchical Modulation

Hugo Meric, Jose Miguel Piquer

arxiv:1310.0677 v1 · 2013-10-02 · cs.NI · 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{H4GMZDD5QIR7BPOAT4JUSE5MJ2}

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	2026-05-18T03:11:34.356614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f0ccc8c7d8223f0bdc09f134913ac4ea4443b613f935fe8146c9e5e4d72d015

Aliases

arxiv: 1310.0677 · arxiv_version: 1310.0677v1 · doi: 10.48550/arxiv.1310.0677 · pith_short_12: H4GMZDD5QIR7 · pith_short_16: H4GMZDD5QIR7BPOA · pith_short_8: H4GMZDD5

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/H4GMZDD5QIR7BPOAT4JUSE5MJ2 \
  | 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: 3f0ccc8c7d8223f0bdc09f134913ac4ea4443b613f935fe8146c9e5e4d72d015

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c39ac507d23e65577c184c72abcf81ea26a5bd43aae6adca4f785db882fc0922",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2013-10-02T12:24:06Z",
    "title_canon_sha256": "63bca928645157eb2706a7a627ee4158969fa10d2aad168c77184f91eb6dc7e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.0677",
    "kind": "arxiv",
    "version": 1
  }
}