Pith Number

pith:RKN2BPXK

pith:2013:RKN2BPXK7TLC4OBYUKQFDFVMRZ

not attested not anchored not stored refs pending

Index Coding Capacity: How far can one go with only Shannon Inequalities?

Hua Sun, Syed A. Jafar

arxiv:1303.7000 v1 · 2013-03-27 · 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{RKN2BPXK7TLC4OBYUKQFDFVMRZ}

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	2026-05-18T03:29:38.893823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a9ba0beeafcd62e3838a2a05196ac8e791b6669195fd5cc7e85abca7fb76df5

Aliases

arxiv: 1303.7000 · arxiv_version: 1303.7000v1 · doi: 10.48550/arxiv.1303.7000 · pith_short_12: RKN2BPXK7TLC · pith_short_16: RKN2BPXK7TLC4OBY · pith_short_8: RKN2BPXK

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/RKN2BPXK7TLC4OBYUKQFDFVMRZ \
  | 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: 8a9ba0beeafcd62e3838a2a05196ac8e791b6669195fd5cc7e85abca7fb76df5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfac420d9c9e68b8b091ebe16131af3a5e7f7a836082aa3775f1540d164ab24d",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-03-27T22:53:13Z",
    "title_canon_sha256": "2fda69b25908de506a17e4a0109aba69d99eb7ddb5a8f8f12c9a62b5be75c320"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.7000",
    "kind": "arxiv",
    "version": 1
  }
}