Pith Number

pith:NFJYC2ET

pith:2013:NFJYC2ETN5WXFMRUUSBN3WYD3Z

not attested not anchored not stored refs pending

Polar Codes with Dynamic Frozen Symbols and Their Decoding by Directed Search

Peter Trifonov, Vera Miloslavskaya

arxiv:1307.2352 v2 · 2013-07-09 · 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{NFJYC2ETN5WXFMRUUSBN3WYD3Z}

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	2026-05-18T03:18:41.943737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69538168936f6d72b234a482dddb03de55322a250c61d527ea473d9e17ab0bf1

Aliases

arxiv: 1307.2352 · arxiv_version: 1307.2352v2 · doi: 10.48550/arxiv.1307.2352 · pith_short_12: NFJYC2ETN5WX · pith_short_16: NFJYC2ETN5WXFMRU · pith_short_8: NFJYC2ET

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/NFJYC2ETN5WXFMRUUSBN3WYD3Z \
  | 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: 69538168936f6d72b234a482dddb03de55322a250c61d527ea473d9e17ab0bf1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a3ec0908092fdb204c897f9a427765a31816b6d333fd81768cb5c55bebc9d0c",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-07-09T07:19:30Z",
    "title_canon_sha256": "9c23b3e78a8bc208f70b2a04ca4498f38195fa84dbac4bfbf5e3c96447fac5e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2352",
    "kind": "arxiv",
    "version": 2
  }
}