Pith Number

pith:NUMOCJCF

pith:2007:NUMOCJCFWOQWMPFNBQ6BMFPMQ3

not attested not anchored not stored refs pending

Space-time codes with controllable ML decoding complexity for any number of transmit antennas

Constantinos B. Papadias, Naresh Sharma, Pavan R. Pinnamraju

arxiv:cs/0701129 v2 · 2007-01-20 · 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{NUMOCJCFWOQWMPFNBQ6BMFPMQ3}

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	2026-05-18T03:55:12.539248Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d18e12445b3a1663cad0c3c1615ec86e1bf41146df0916813cd7b826f4133b5

Aliases

arxiv: cs/0701129 · arxiv_version: cs/0701129v2 · doi: 10.48550/arxiv.cs/0701129 · pith_short_12: NUMOCJCFWOQW · pith_short_16: NUMOCJCFWOQWMPFN · pith_short_8: NUMOCJCF

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/NUMOCJCFWOQWMPFNBQ6BMFPMQ3 \
  | 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: 6d18e12445b3a1663cad0c3c1615ec86e1bf41146df0916813cd7b826f4133b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1a0ea4ef719743121820599bcd1d16afa1046ce3cc6746073a294d8f0299b7e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "",
    "primary_cat": "cs.IT",
    "submitted_at": "2007-01-20T17:27:31Z",
    "title_canon_sha256": "8827f4a80059d4aa9447700c5be8dd5d2cbe9c84ea7721d8334db3ed3184bb2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0701129",
    "kind": "arxiv",
    "version": 2
  }
}