Pith Number

pith:GCUVWVV6

pith:2009:GCUVWVV6QQYGIHPSAS6KOJ7NVU

not attested not anchored not stored refs pending

Compressive Sensing for Feedback Reduction in MIMO Broadcast Channels

Syed T. Qaseem, Tareq Y. Al-Naffouri

arxiv:0907.1888 v1 · 2009-07-10 · 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{GCUVWVV6QQYGIHPSAS6KOJ7NVU}

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	2026-05-18T00:57:58.108340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

30a95b56be8430641df204bca727edad3f665019bc9d49c46db5582b8e47191d

Aliases

arxiv: 0907.1888 · arxiv_version: 0907.1888v1 · doi: 10.48550/arxiv.0907.1888 · pith_short_12: GCUVWVV6QQYG · pith_short_16: GCUVWVV6QQYGIHPS · pith_short_8: GCUVWVV6

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/GCUVWVV6QQYGIHPSAS6KOJ7NVU \
  | 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: 30a95b56be8430641df204bca727edad3f665019bc9d49c46db5582b8e47191d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe4c3e80d66046e5bb2bc7b28e7539d312f5c0c3693605b075dc3ba734df72a5",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-07-10T19:29:21Z",
    "title_canon_sha256": "6c3c13b38575db733a3e822e6347125d558a450e406bfce09c12e2ee20d275de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1888",
    "kind": "arxiv",
    "version": 1
  }
}