Pith Number

pith:KSOPSFMG

pith:2015:KSOPSFMGPBAUY2WUG4PPW2IGJA

not attested not anchored not stored refs pending

Quasi-perfect codes in the $\ell_p$ metric

Antonio Campello, Grasiele C. Jorge, Jo\~ao E. Strapasson, Sueli I. R. Costa

arxiv:1509.05348 v1 · 2015-09-17 · 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{KSOPSFMGPBAUY2WUG4PPW2IGJA}

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	2026-05-18T01:32:44.123892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

549cf9158678414c6ad4371efb69064807cc647d9d4f5d6847cde4f3d01cd5cc

Aliases

arxiv: 1509.05348 · arxiv_version: 1509.05348v1 · doi: 10.48550/arxiv.1509.05348 · pith_short_12: KSOPSFMGPBAU · pith_short_16: KSOPSFMGPBAUY2WU · pith_short_8: KSOPSFMG

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/KSOPSFMGPBAUY2WUG4PPW2IGJA \
  | 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: 549cf9158678414c6ad4371efb69064807cc647d9d4f5d6847cde4f3d01cd5cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f976d3d1cf6eba1004d82e6d8938e12f1641e97352bc6dbb4bfd2fa6923a2fa",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-09-17T17:57:05Z",
    "title_canon_sha256": "fe924818bb5091800c6ba62434011eb63669c46452480c93b46117d9f1ef3e57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.05348",
    "kind": "arxiv",
    "version": 1
  }
}