Pith Number

pith:QUGKVNKI

pith:2015:QUGKVNKINFJCEJU4DHIXHE3TN4

not attested not anchored not stored refs pending

Generalized Interlinked Cycle Cover for Index Coding

Chandra Thapa, Lawrence Ong, Sarah J. Johnson

arxiv:1504.04806 v3 · 2015-04-19 · 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{QUGKVNKINFJCEJU4DHIXHE3TN4}

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	2026-05-18T00:42:39.812410Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

850caab548695222269c19d17393736f3b4213d948c0bf245583ed3c0fb24988

Aliases

arxiv: 1504.04806 · arxiv_version: 1504.04806v3 · doi: 10.48550/arxiv.1504.04806 · pith_short_12: QUGKVNKINFJC · pith_short_16: QUGKVNKINFJCEJU4 · pith_short_8: QUGKVNKI

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/QUGKVNKINFJCEJU4DHIXHE3TN4 \
  | 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: 850caab548695222269c19d17393736f3b4213d948c0bf245583ed3c0fb24988

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b460e57d65b14a3a56391ad2930d533991e9294c31573de31e5af855481bb0b8",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-04-19T07:33:16Z",
    "title_canon_sha256": "d3dd42b38eef34097bc478ebde8e05c7562f950f3c80d4902d3e2e4ed42bfdce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04806",
    "kind": "arxiv",
    "version": 3
  }
}