Pith Number

pith:DH7CIOUI

pith:2008:DH7CIOUIZ66H2MMB6WA2IXF226

not attested not anchored not stored refs pending

Noncoherent Capacity of Underspread Fading Channels

Giuseppe Durisi, Helmut B\"olcskei, Shlomo Shamai (Shitz), Ulrich G. Schuster

arxiv:0804.1748 v1 · 2008-04-10 · 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{DH7CIOUIZ66H2MMB6WA2IXF226}

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	2026-05-18T00:59:11.851110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19fe243a88cfbc7d3181f581a45cbad7a5022daa2fa3ac90226185da90e7260d

Aliases

arxiv: 0804.1748 · arxiv_version: 0804.1748v1 · doi: 10.48550/arxiv.0804.1748 · pith_short_12: DH7CIOUIZ66H · pith_short_16: DH7CIOUIZ66H2MMB · pith_short_8: DH7CIOUI

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/DH7CIOUIZ66H2MMB6WA2IXF226 \
  | 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: 19fe243a88cfbc7d3181f581a45cbad7a5022daa2fa3ac90226185da90e7260d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97ff0bccc0c758d007c7af88ca0121cb5fad32501d94c97e7a63e758d81aa7d2",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2008-04-10T16:34:47Z",
    "title_canon_sha256": "d86364c62a2770729f053f5de6bc8ac3f638bc02d3b058f02178f216e7e83433"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.1748",
    "kind": "arxiv",
    "version": 1
  }
}