Pith Number

pith:V5ONSJCN

pith:2013:V5ONSJCNWJKQO32IEBWOUM2IFD

not attested not anchored not stored refs pending

Finite generation of the cohomology of some skew group algebras

Sarah Witherspoon, Van C. Nguyen

arxiv:1310.0724 v4 · 2013-10-02 · math.RT · 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{V5ONSJCNWJKQO32IEBWOUM2IFD}

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	2026-05-18T00:15:25.078488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af5cd9244db255076f48206cea334828e7cd99b7e4578d49acb92b9e2382df73

Aliases

arxiv: 1310.0724 · arxiv_version: 1310.0724v4 · doi: 10.48550/arxiv.1310.0724 · pith_short_12: V5ONSJCNWJKQ · pith_short_16: V5ONSJCNWJKQO32I · pith_short_8: V5ONSJCN

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/V5ONSJCNWJKQO32IEBWOUM2IFD \
  | 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: af5cd9244db255076f48206cea334828e7cd99b7e4578d49acb92b9e2382df73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ddaa16b12c832a41a277d2106f59cc858ea8fb91b3ba9322d6ef7d1d322a192",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2013-10-02T15:00:48Z",
    "title_canon_sha256": "d8c3fb07d7818bbcb72990412cd4a5f305d22cbbe96a91f32eb73eac2f757679"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.0724",
    "kind": "arxiv",
    "version": 4
  }
}