Pith Number

pith:JJSNZI5Y

pith:2017:JJSNZI5YTMJVZMHK5EQWBNAACF

not attested not anchored not stored refs pending

On Code Rates of Fractional Repetition Codes

Krishna Gopal Benerjee, Manish K Gupta

arxiv:1711.08869 v1 · 2017-11-24 · 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{JJSNZI5YTMJVZMHK5EQWBNAACF}

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	2026-05-18T00:29:41.905994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a64dca3b89b135cb0eae92160b40011727146b47cd370940fec8b4538cd75e6

Aliases

arxiv: 1711.08869 · arxiv_version: 1711.08869v1 · doi: 10.48550/arxiv.1711.08869 · pith_short_12: JJSNZI5YTMJV · pith_short_16: JJSNZI5YTMJVZMHK · pith_short_8: JJSNZI5Y

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/JJSNZI5YTMJVZMHK5EQWBNAACF \
  | 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: 4a64dca3b89b135cb0eae92160b40011727146b47cd370940fec8b4538cd75e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43e00dc6ec3885ebb01d9a88b5da68f1485305bd5cb612e8f366fd88dc869102",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-11-24T05:37:02Z",
    "title_canon_sha256": "0c917c3dc14e0ff060c9fc3b390049a730d2f039fe6d3f1ba090c33dae7f701d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.08869",
    "kind": "arxiv",
    "version": 1
  }
}