Pith Number

pith:WNO5J3DC

pith:2019:WNO5J3DCATFEEUBIURR4EFPZXL

not attested not anchored not stored refs pending

Optimal Weakly Secure Linear Codes for Some Classes of the Two-Sender Index Coding Problem

B. Sundar Rajan, Chinmayananda Arunachala

arxiv:1904.02416 v1 · 2019-04-04 · 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{WNO5J3DCATFEEUBIURR4EFPZXL}

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	2026-05-17T23:49:23.749179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b35dd4ec6204ca425028a463c215f9baf3b8b8eec7d1f96103988125da3d781f

Aliases

arxiv: 1904.02416 · arxiv_version: 1904.02416v1 · doi: 10.48550/arxiv.1904.02416 · pith_short_12: WNO5J3DCATFE · pith_short_16: WNO5J3DCATFEEUBI · pith_short_8: WNO5J3DC

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/WNO5J3DCATFEEUBIURR4EFPZXL \
  | 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: b35dd4ec6204ca425028a463c215f9baf3b8b8eec7d1f96103988125da3d781f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ab51703fb31d321bbee304142a87d1ddd0e92f744af9af8ea1a768260f7e5a6",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-04-04T09:03:18Z",
    "title_canon_sha256": "db4f638f46122a23a68f8655eb421c91859b3cddd0013f26795d74e038b33f0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02416",
    "kind": "arxiv",
    "version": 1
  }
}