Pith Number

pith:LSIUPY6Z

pith:2011:LSIUPY6ZEER4GRESB65PLAFQKL

not attested not anchored not stored refs pending

Exact Free Distance and Trapping Set Growth Rates for LDPC Convolutional Codes

Ali E. Pusane, Daniel J. Costello Jr, David G. M. Mitchell, Michael Lentmaier

arxiv:1106.1414 v1 · 2011-06-07 · cs.IT · math.IT

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LSIUPY6ZEER4GRESB65PLAFQKL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:59:10.269333Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c9147e3d92123c344920fbaf580b052f1c389a2631b8c5cfef9dc3dee9dfc50

Aliases

arxiv: 1106.1414 · arxiv_version: 1106.1414v1 · doi: 10.48550/arxiv.1106.1414 · pith_short_12: LSIUPY6ZEER4 · pith_short_16: LSIUPY6ZEER4GRES · pith_short_8: LSIUPY6Z

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/LSIUPY6ZEER4GRESB65PLAFQKL \
  | 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: 5c9147e3d92123c344920fbaf580b052f1c389a2631b8c5cfef9dc3dee9dfc50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ce6d8fc268636c11d32c62e9392ef48c1ae77f15df4e2a813d3d22fcf0941f9",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-06-07T19:00:35Z",
    "title_canon_sha256": "63b69ab4395d247895d864c10c2314b8ef84d659290a4cb56fb5e17e8916a4d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.1414",
    "kind": "arxiv",
    "version": 1
  }
}