Pith Number

pith:7JYI6CWP

pith:2007:7JYI6CWPTZ6WDGUSKKXFH6PMZI

not attested not anchored not stored refs pending

Signal Set Design for Full-Diversity Low-Decoding-Complexity Differential Scaled-Unitary STBCs

B. Sundar Rajan, G. Susinder Rajan

arxiv:0704.2509 v1 · 2007-04-19 · 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{7JYI6CWPTZ6WDGUSKKXFH6PMZI}

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	2026-05-18T00:58:26.231883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa708f0acf9e7d619a9252ae53f9ecca09a4b15e1cd352b191514259d066aa3d

Aliases

arxiv: 0704.2509 · arxiv_version: 0704.2509v1 · doi: 10.48550/arxiv.0704.2509 · pith_short_12: 7JYI6CWPTZ6W · pith_short_16: 7JYI6CWPTZ6WDGUS · pith_short_8: 7JYI6CWP

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/7JYI6CWPTZ6WDGUSKKXFH6PMZI \
  | 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: fa708f0acf9e7d619a9252ae53f9ecca09a4b15e1cd352b191514259d066aa3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4f3afa3f8d8ee08ff09fe02dba0331e2314ab29891626b808f4f3f09e4928d9",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "",
    "primary_cat": "cs.IT",
    "submitted_at": "2007-04-19T11:25:23Z",
    "title_canon_sha256": "f70309f5436f89fd73f90889d8b838a93710cd04f40d481bb062247eb97310a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.2509",
    "kind": "arxiv",
    "version": 1
  }
}