Pith Number

pith:EW6IA7WG

pith:2015:EW6IA7WGSV63AJTCQFCMF656PA

not attested not anchored not stored refs pending

Approaching the Gaussian channel capacity with APSK constellations

Hugo Meric

arxiv:1503.04752 v1 · 2015-03-16 · 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{EW6IA7WGSV63AJTCQFCMF656PA}

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	2026-05-18T02:23:24.118263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25bc807ec6957db026628144c2fbbe78246995f5044f2c5971647d29096c07cf

Aliases

arxiv: 1503.04752 · arxiv_version: 1503.04752v1 · doi: 10.48550/arxiv.1503.04752 · pith_short_12: EW6IA7WGSV63 · pith_short_16: EW6IA7WGSV63AJTC · pith_short_8: EW6IA7WG

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/EW6IA7WGSV63AJTCQFCMF656PA \
  | 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: 25bc807ec6957db026628144c2fbbe78246995f5044f2c5971647d29096c07cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0bc5258b2d59a66d2224219ea0c82ecfa52b89491d5b507ad222f3aa3cfb665",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-03-16T18:01:42Z",
    "title_canon_sha256": "103b3df278e43b45dd4ae0804b6227c3ee856988e1a3650e7f72e11129888b52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.04752",
    "kind": "arxiv",
    "version": 1
  }
}