Pith Number

pith:EDJI237R

pith:2018:EDJI237R2INJ45FDYDTAMI2HXK

not attested not anchored not stored refs pending

Additive perfect codes in Doob graphs

(2) Sobolev Institute of Mathematics, China, Daitao Huang (1), Denis S. Krotov (2) ((1) Anhui University, Hefei, Minjia Shi (1), Novosibirsk, Russia)

arxiv:1806.04834 v2 · 2018-06-13 · 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{EDJI237R2INJ45FDYDTAMI2HXK}

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	2026-05-17T23:41:54.010496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20d28d6ff1d21a9e74a3c0e6062347ba90db6233997018a1a6dbfb373bbddb4f

Aliases

arxiv: 1806.04834 · arxiv_version: 1806.04834v2 · doi: 10.48550/arxiv.1806.04834 · pith_short_12: EDJI237R2INJ · pith_short_16: EDJI237R2INJ45FD · pith_short_8: EDJI237R

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/EDJI237R2INJ45FDYDTAMI2HXK \
  | 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: 20d28d6ff1d21a9e74a3c0e6062347ba90db6233997018a1a6dbfb373bbddb4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fab353a77fe13016c36914e91cfdb52ce4952738a411d58f144cbe283e65c894",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-06-13T03:15:36Z",
    "title_canon_sha256": "a3f2567cadd13ab696e89cf3da23ddd39b343a57f72ef5c3d657b57682a2049a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.04834",
    "kind": "arxiv",
    "version": 2
  }
}