Pith Number

pith:UARVDRE7

pith:2002:UARVDRE7WIKIP7A3D3AS42CSAM

not attested not anchored not stored refs pending

The Z_4-Linearity of Kerdock, Preparata, Goethals and Related Codes

A.R. Calderbank, A. Roger Hammons, Jr., N.J.A. Sloane, Patrick Sol\'e, P. Vijay Kumar

arxiv:math/0207208 v1 · 2002-07-23 · math.CO · cs.IT · math.IT

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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	2026-05-18T01:08:59.859712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a02351c49fb21487fc1b1ec12e6852031a64bfd5211b65a613ce979de712a4eb

Aliases

arxiv: math/0207208 · arxiv_version: math/0207208v1 · doi: 10.48550/arxiv.math/0207208 · pith_short_12: UARVDRE7WIKI · pith_short_16: UARVDRE7WIKIP7A3 · pith_short_8: UARVDRE7

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/UARVDRE7WIKIP7A3D3AS42CSAM \
  | 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: a02351c49fb21487fc1b1ec12e6852031a64bfd5211b65a613ce979de712a4eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c73cc05a7e357e4af315b81deae87627606bba5101df1153be679d6944cf1c5",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "2002-07-23T11:45:50Z",
    "title_canon_sha256": "a7abc1056dc5f882b7e9034dc85c633c55a74afe1fb650d791bf53699d8daf51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0207208",
    "kind": "arxiv",
    "version": 1
  }
}