Pith Number

pith:DSNUP4DI

pith:2009:DSNUP4DIJ7MYPFE2R2EYXNJHUH

not attested not anchored not stored refs pending

Distortion Exponent in MIMO Channels with Feedback

Andrea Goldsmith, Deniz Gunduz, H. Vincent Poor

arxiv:0910.4901 v1 · 2009-10-26 · 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{DSNUP4DIJ7MYPFE2R2EYXNJHUH}

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	2026-05-18T00:58:47.898560Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c9b47f0684fd987949a8e898bb527a1c2ee8ffffb8245b1cc6541216257062d

Aliases

arxiv: 0910.4901 · arxiv_version: 0910.4901v1 · doi: 10.48550/arxiv.0910.4901 · pith_short_12: DSNUP4DIJ7MY · pith_short_16: DSNUP4DIJ7MYPFE2 · pith_short_8: DSNUP4DI

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/DSNUP4DIJ7MYPFE2R2EYXNJHUH \
  | 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: 1c9b47f0684fd987949a8e898bb527a1c2ee8ffffb8245b1cc6541216257062d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db3254426195ba9f8e1e4bfd4b5c7a0090a1a588f15b72655b2cd756a958fd2a",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-10-26T15:09:47Z",
    "title_canon_sha256": "d4173101fc5a38cc5196236ae538806306965f58a1977735c39f9ceca913f527"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4901",
    "kind": "arxiv",
    "version": 1
  }
}