Pith Number

pith:IRNXOYFI

pith:2010:IRNXOYFIYCA2E7F4H6GQ4DN76J

not attested not anchored not stored refs pending

On second cohomology of duals of compact groups

Lars Tuset, Sergey Neshveyev

arxiv:1011.4569 v5 · 2010-11-20 · math.OA · 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{IRNXOYFIYCA2E7F4H6GQ4DN76J}

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	2026-05-18T04:22:02.243972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

445b7760a8c081a27cbc3f8d0e0dbff278d2cbfa9a002719cf875167c5447539

Aliases

arxiv: 1011.4569 · arxiv_version: 1011.4569v5 · doi: 10.48550/arxiv.1011.4569 · pith_short_12: IRNXOYFIYCA2 · pith_short_16: IRNXOYFIYCA2E7F4 · pith_short_8: IRNXOYFI

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/IRNXOYFIYCA2E7F4H6GQ4DN76J \
  | 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: 445b7760a8c081a27cbc3f8d0e0dbff278d2cbfa9a002719cf875167c5447539

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8eae444429116ea4fed52c1366704430575380f27650523205053298aab3dd60",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2010-11-20T09:11:36Z",
    "title_canon_sha256": "8154056cbfa5a3b4831db7d068240c3f633a734ea9fb2a261d5d5e675ea7980d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.4569",
    "kind": "arxiv",
    "version": 5
  }
}