Pith Number

pith:ZXDHM7A6

pith:2019:ZXDHM7A6BQYKZHLPSPUXPVYYTO

not attested not anchored not stored refs pending

Cohomology-Developed Matrices -- constructing families of weighing matrices and automorphism actions

Assaf Goldberger

arxiv:1903.00471 v3 · 2019-03-01 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZXDHM7A6BQYKZHLPSPUXPVYYTO}

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	2026-07-05T06:42:14.615002Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cdc6767c1e0c30ac9d6f93e977d7189b84b35d7c5aa3339697e3de705ecf0434

Aliases

arxiv: 1903.00471 · arxiv_version: 1903.00471v3 · doi: 10.48550/arxiv.1903.00471 · pith_short_12: ZXDHM7A6BQYK · pith_short_16: ZXDHM7A6BQYKZHLP · pith_short_8: ZXDHM7A6

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/ZXDHM7A6BQYKZHLPSPUXPVYYTO \
  | 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: cdc6767c1e0c30ac9d6f93e977d7189b84b35d7c5aa3339697e3de705ecf0434

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecfd9587b3e8f0b92a7a6b2dd4889892d41f7311e32ba443e8594e06469b4fd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2019-03-01T08:05:26Z",
    "title_canon_sha256": "cc78a538874268e08441e346bcc271614e1a4fbc102c6eef1dc316e07ba35d7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.00471",
    "kind": "arxiv",
    "version": 3
  }
}