Pith Number

pith:VMHLMNCK

pith:2014:VMHLMNCKB2CCOOIQ4MDS3RV4WI

not attested not anchored not stored refs pending

Spectral Properties of Small Hadamard Matrices

Dorin Ervin Dutkay, Eric Weber, John Haussermann

arxiv:1409.1176 v2 · 2014-09-03 · math.SP

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	2026-05-18T02:42:14.215953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab0eb6344a0e84273910e3072dc6bcb207ececc7b191136d7469595e138bfe40

Aliases

arxiv: 1409.1176 · arxiv_version: 1409.1176v2 · doi: 10.48550/arxiv.1409.1176 · pith_short_12: VMHLMNCKB2CC · pith_short_16: VMHLMNCKB2CCOOIQ · pith_short_8: VMHLMNCK

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/VMHLMNCKB2CCOOIQ4MDS3RV4WI \
  | 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: ab0eb6344a0e84273910e3072dc6bcb207ececc7b191136d7469595e138bfe40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af577cff82a378459b6877c214bbe5cdb79408344e8462be7bfc58c88cc62712",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2014-09-03T17:32:31Z",
    "title_canon_sha256": "91d3ba7ad754e4bbcc1934f9a9750bd92ad6a1b1626c2ac94ea3bcf2dfd312f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.1176",
    "kind": "arxiv",
    "version": 2
  }
}