Pith Number

pith:OXTAD7CE

pith:2024:OXTAD7CERF3EXSVFT4LOL6PXMA

not attested not anchored not stored refs pending

Quasi-Perfect and Distance-Optimal Codes Sum-Rank Codes

Hao Chen

arxiv:2401.11160 v7 · 2024-01-20 · 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{OXTAD7CERF3EXSVFT4LOL6PXMA}

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.

Cited by

1 paper in Pith

On the non-existence of perfect codes in the sum-rank metric

Receipt and verification

First computed	2026-07-05T07:45:15.575904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75e601fc4489764bcaa59f16e5f9f760340799e2096c93d5d5137fd57772dd89

Aliases

arxiv: 2401.11160 · arxiv_version: 2401.11160v7 · doi: 10.48550/arxiv.2401.11160 · pith_short_12: OXTAD7CERF3E · pith_short_16: OXTAD7CERF3EXSVF · pith_short_8: OXTAD7CE

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/OXTAD7CERF3EXSVFT4LOL6PXMA \
  | 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: 75e601fc4489764bcaa59f16e5f9f760340799e2096c93d5d5137fd57772dd89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9628effafd6b598119979f68190f19db9e08ad9761838808ee8bf613a24f3137",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2024-01-20T07:55:21Z",
    "title_canon_sha256": "7556be3be200b85586a73d638e6085c87cbc858757ebf19cd02375c9ba877fe1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2401.11160",
    "kind": "arxiv",
    "version": 7
  }
}