Pith Number

pith:ELJ2VLC2

pith:2009:ELJ2VLC2UBGOQ6P6UHWVBWY7J6

not attested not anchored not stored refs pending

Group actions on algebras and the graded Lie structure of Hochschild cohomology

Anne V. Shepler, Sarah Witherspoon

arxiv:0911.0938 v2 · 2009-11-04 · math.RA · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ELJ2VLC2UBGOQ6P6UHWVBWY7J6}

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	2026-05-18T04:14:15.190741Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22d3aaac5aa04ce879fea1ed50db1f4fa31dad640eb9d413345a32cecba6ea4e

Aliases

arxiv: 0911.0938 · arxiv_version: 0911.0938v2 · doi: 10.48550/arxiv.0911.0938 · pith_short_12: ELJ2VLC2UBGO · pith_short_16: ELJ2VLC2UBGOQ6P6 · pith_short_8: ELJ2VLC2

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/ELJ2VLC2UBGOQ6P6UHWVBWY7J6 \
  | 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: 22d3aaac5aa04ce879fea1ed50db1f4fa31dad640eb9d413345a32cecba6ea4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "860121674b49bcf19a328c38d4387d35fc32b9431a3619e8dbfea09eee4733b9",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2009-11-04T21:52:02Z",
    "title_canon_sha256": "583e0b5042342e775bd3e67207a34d859b5f1216017110859f2deec6d5b2c8f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0938",
    "kind": "arxiv",
    "version": 2
  }
}