Pith Number

pith:AEWZY4PN

pith:2009:AEWZY4PNPHK7B5QX2BQO53N4R2

not attested not anchored not stored refs pending

Splitting maps and norm bounds for the cyclic cohomology of biflat Banach algebras

Yemon Choi

arxiv:0910.5044 v2 · 2009-10-27 · math.KT · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AEWZY4PNPHK7B5QX2BQO53N4R2}

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	2026-05-18T04:31:11.988102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

012d9c71ed79d5f0f617d060eeedbc8e9778309e0c36a18ffcc2ef148917af79

Aliases

arxiv: 0910.5044 · arxiv_version: 0910.5044v2 · doi: 10.48550/arxiv.0910.5044 · pith_short_12: AEWZY4PNPHK7 · pith_short_16: AEWZY4PNPHK7B5QX · pith_short_8: AEWZY4PN

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/AEWZY4PNPHK7B5QX2BQO53N4R2 \
  | 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: 012d9c71ed79d5f0f617d060eeedbc8e9778309e0c36a18ffcc2ef148917af79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "393d9de00596a160fe3a2d02286331737bd7122b44bef6a98e5dd95ef9d197f8",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2009-10-27T05:48:22Z",
    "title_canon_sha256": "5bf6220a16718698310513951a9a7e391321b022799b1b01ec81ea8a6d95afb2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5044",
    "kind": "arxiv",
    "version": 2
  }
}