Pith Number

pith:CHY5EEP5

pith:2017:CHY5EEP5WNIUGR2ELBCLL2VMXV

not attested not anchored not stored refs pending

From Cages to Trapping Sets and Codewords: A Technique to Derive Tight Upper Bounds on the Minimum Size of Trapping Sets and Minimum Distance of LDPC Codes

Ali Dehghan, Amir H. Banihashemi

arxiv:1711.10539 v2 · 2017-11-28 · 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{CHY5EEP5WNIUGR2ELBCLL2VMXV}

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	2026-05-18T00:04:00.442226Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11f1d211fdb3514347445844b5eaacbd40b06644090cc8bfef29e07b082ccae5

Aliases

arxiv: 1711.10539 · arxiv_version: 1711.10539v2 · doi: 10.48550/arxiv.1711.10539 · pith_short_12: CHY5EEP5WNIU · pith_short_16: CHY5EEP5WNIUGR2E · pith_short_8: CHY5EEP5

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/CHY5EEP5WNIUGR2ELBCLL2VMXV \
  | 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: 11f1d211fdb3514347445844b5eaacbd40b06644090cc8bfef29e07b082ccae5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fecf93606f5db0a4c20335dadd0f0765b412028ff5289ff1746d38ee30b70b5a",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-11-28T20:24:04Z",
    "title_canon_sha256": "8217ba406cb0257eff80eed88053ef363a7b0cce3101df8ba7f05bcdffc5d60e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.10539",
    "kind": "arxiv",
    "version": 2
  }
}