Pith Number

pith:MEPBDLQG

pith:2011:MEPBDLQGJTULSHIY3KQ5YPFFY6

not attested not anchored not stored refs pending

Hochschild cohomology and quantum Drinfeld Hecke algebras

Deepak Naidu, Sarah Witherspoon

arxiv:1111.5243 v2 · 2011-11-22 · math.RA · 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{MEPBDLQGJTULSHIY3KQ5YPFFY6}

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	2026-05-18T03:03:21.492784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

611e11ae064ce8b91d18daa1dc3ca5c7a4f50d1533a0a3ac929d59c9b68ca108

Aliases

arxiv: 1111.5243 · arxiv_version: 1111.5243v2 · doi: 10.48550/arxiv.1111.5243 · pith_short_12: MEPBDLQGJTUL · pith_short_16: MEPBDLQGJTULSHIY · pith_short_8: MEPBDLQG

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/MEPBDLQGJTULSHIY3KQ5YPFFY6 \
  | 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: 611e11ae064ce8b91d18daa1dc3ca5c7a4f50d1533a0a3ac929d59c9b68ca108

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a98c8ba6237570ad15f02170c27ec5c4eca3d5c67b02db4cd212389619c25ca",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2011-11-22T16:28:59Z",
    "title_canon_sha256": "b5955a57584e909cda69a2351f34e6e75e17a8373b7129e625fd8aba2da0e580"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5243",
    "kind": "arxiv",
    "version": 2
  }
}