Pith Number

pith:EPSG2IKK

pith:2015:EPSG2IKKOE3ZGTEXBKS4ITMVTT

not attested not anchored not stored refs pending

A study of Blattner-Montgomery duality in weak Hopf algebras of groupoid algebras type

Wagner Cortes

arxiv:1504.08084 v1 · 2015-04-30 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EPSG2IKKOE3ZGTEXBKS4ITMVTT}

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	2026-05-18T02:17:23.363732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23e46d214a7137934c970aa5c44d959ccf34745f27bcc9fcd4c5bc8ecf8eb05a

Aliases

arxiv: 1504.08084 · arxiv_version: 1504.08084v1 · doi: 10.48550/arxiv.1504.08084 · pith_short_12: EPSG2IKKOE3Z · pith_short_16: EPSG2IKKOE3ZGTEX · pith_short_8: EPSG2IKK

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/EPSG2IKKOE3ZGTEXBKS4ITMVTT \
  | 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: 23e46d214a7137934c970aa5c44d959ccf34745f27bcc9fcd4c5bc8ecf8eb05a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fd9663ea926f081628b721d78209136bbf27c16cc234a28c9777c16c41f0138",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2015-04-30T05:17:49Z",
    "title_canon_sha256": "909c3b48d1510f9954f84c58f367c515f72a2e025788d7b053f7331640ea351b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.08084",
    "kind": "arxiv",
    "version": 1
  }
}