Pith Number

pith:7WZB7HRB

pith:2013:7WZB7HRBIW377HWU3ZXXH7VKC5

not attested not anchored not stored refs pending

Kronecker Square Roots and The Block vec Matrix

Ignacio Ojeda

arxiv:1310.8149 v2 · 2013-10-08 · math.GM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7WZB7HRBIW377HWU3ZXXH7VKC5}

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	2026-05-18T03:07:33.674197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdb21f9e2145b7ff9ed4de6f73feaa175b2d5275b112a2d2f737852781a5b0b1

Aliases

arxiv: 1310.8149 · arxiv_version: 1310.8149v2 · doi: 10.48550/arxiv.1310.8149 · pith_short_12: 7WZB7HRBIW37 · pith_short_16: 7WZB7HRBIW377HWU · pith_short_8: 7WZB7HRB

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/7WZB7HRBIW377HWU3ZXXH7VKC5 \
  | 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: fdb21f9e2145b7ff9ed4de6f73feaa175b2d5275b112a2d2f737852781a5b0b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a67ea540e1ecf16b2f06a11f379555485ffa29de2c8a33d685cc1d2be4e2a666",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2013-10-08T15:56:49Z",
    "title_canon_sha256": "2ea84ffb07319664afb4111a0891614f9eceaa6184e131a4e5a60c2543ce5709"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.8149",
    "kind": "arxiv",
    "version": 2
  }
}