Pith Number

pith:DB4QCI7Z

pith:2017:DB4QCI7ZPWAQEG47AKA4DTC5XB

not attested not anchored not stored refs pending

Precoding for the Sparsely Spread MC-CDMA Downlink with Discrete-Alphabet Inputs

Chunshan Liu, Min Li, Stephen V. Hanly

arxiv:1702.02634 v1 · 2017-02-08 · 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{DB4QCI7ZPWAQEG47AKA4DTC5XB}

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	2026-05-18T00:51:03.831134Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18790123f97d81021b9f0281c1cc5db86652036632badbdd04e1892deb67b0e0

Aliases

arxiv: 1702.02634 · arxiv_version: 1702.02634v1 · doi: 10.48550/arxiv.1702.02634 · pith_short_12: DB4QCI7ZPWAQ · pith_short_16: DB4QCI7ZPWAQEG47 · pith_short_8: DB4QCI7Z

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/DB4QCI7ZPWAQEG47AKA4DTC5XB \
  | 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: 18790123f97d81021b9f0281c1cc5db86652036632badbdd04e1892deb67b0e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ec5de6abe2cb6ca23d8a61f8fbbe58b0ec928070fdf1662c3b32aaf958b9016",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-02-08T22:04:50Z",
    "title_canon_sha256": "be159fb02180d8cf1b826becd648aac4093ffc92b888c9c149f421b5e86f48d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.02634",
    "kind": "arxiv",
    "version": 1
  }
}