Pith Number

pith:TTIL6D3T

pith:2017:TTIL6D3T5MS4GR524M5KBGIKBL

not attested not anchored not stored refs pending

Cohomology for Drinfeld doubles of some infinitesimal group schemes

Cris Negron, Eric Friedlander

arxiv:1709.09217 v2 · 2017-09-26 · math.RT · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TTIL6D3T5MS4GR524M5KBGIKBL}

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	2026-05-18T00:08:44.218437Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9cd0bf0f73eb25c347bae33aa0990a0aedd906fb35026e6687c2c3cfb67b37f1

Aliases

arxiv: 1709.09217 · arxiv_version: 1709.09217v2 · doi: 10.48550/arxiv.1709.09217 · pith_short_12: TTIL6D3T5MS4 · pith_short_16: TTIL6D3T5MS4GR52 · pith_short_8: TTIL6D3T

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/TTIL6D3T5MS4GR524M5KBGIKBL \
  | 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: 9cd0bf0f73eb25c347bae33aa0990a0aedd906fb35026e6687c2c3cfb67b37f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24fc3b0dc18af50562f1453115453f47051b7303887e9ba5baaf36373e437975",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2017-09-26T18:51:58Z",
    "title_canon_sha256": "278fa0c49b93cc68055ef9b2f14bf9e98bf86270156080fc56cb6a3aafb27d17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09217",
    "kind": "arxiv",
    "version": 2
  }
}