Pith Number

pith:O3LNVZZ6

pith:2013:O3LNVZZ6OE7SZQMHINKFWAJVA7

not attested not anchored not stored refs pending

Polar Coding for Fading Channels: Binary and Exponential Channel Cases

Hongbo Si, O. Ozan Koyluoglu, Sriram Vishwanath

arxiv:1311.4941 v2 · 2013-11-20 · 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{O3LNVZZ6OE7SZQMHINKFWAJVA7}

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	2026-05-18T02:45:04.586823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76d6dae73e713f2cc18743545b013507ce5776df685bad364a9ae17800fe001b

Aliases

arxiv: 1311.4941 · arxiv_version: 1311.4941v2 · doi: 10.48550/arxiv.1311.4941 · pith_short_12: O3LNVZZ6OE7S · pith_short_16: O3LNVZZ6OE7SZQMH · pith_short_8: O3LNVZZ6

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/O3LNVZZ6OE7SZQMHINKFWAJVA7 \
  | 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: 76d6dae73e713f2cc18743545b013507ce5776df685bad364a9ae17800fe001b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0dc0e7a5fe329b9f772c6b0c934f93f78dda31a546c1bc5de430f5fed21ee9c6",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-11-20T02:33:07Z",
    "title_canon_sha256": "dcf1a0d8e28dfadfde2a47f74b77ad779473fa4abefa06f76969f7fb6d557ef2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4941",
    "kind": "arxiv",
    "version": 2
  }
}