Pith Number

pith:HWYR6KLB

pith:2017:HWYR6KLB5B42KDITTAJ6C7YL7P

not attested not anchored not stored refs pending

Optimal Index Codes via a Duality between Index Coding and Network Coding

Ashok Choudhary, Prasad Krishnan, Vamsi Krishna Gummadi

arxiv:1711.06487 v1 · 2017-11-17 · cs.IT · math.CO · 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{HWYR6KLB5B42KDITTAJ6C7YL7P}

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	2026-05-18T00:30:20.967514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3db11f2961e879a50d139813e17f0bfbd9cd8a49b4ea17bdd97a905fea01a075

Aliases

arxiv: 1711.06487 · arxiv_version: 1711.06487v1 · doi: 10.48550/arxiv.1711.06487 · pith_short_12: HWYR6KLB5B42 · pith_short_16: HWYR6KLB5B42KDIT · pith_short_8: HWYR6KLB

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/HWYR6KLB5B42KDITTAJ6C7YL7P \
  | 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: 3db11f2961e879a50d139813e17f0bfbd9cd8a49b4ea17bdd97a905fea01a075

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2dccf2fb8e4ffd2459be78f45f475c97a4449f66406284094ae642f2f2f66db",
    "cross_cats_sorted": [
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-11-17T10:44:38Z",
    "title_canon_sha256": "0e78e999b844b95854287f60efc3e51fd94caf7fc540f36e97a0f12cd2d8dc00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.06487",
    "kind": "arxiv",
    "version": 1
  }
}