Pith Number

pith:HQPNUVXF

pith:2014:HQPNUVXFWHGWWVD6LNOHYGN472

not attested not anchored not stored refs pending

Equivariant Chern classes in Hopf cyclic cohomology

Henri Moscovici

arxiv:1409.2044 v2 · 2014-09-06 · math.DG · 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{HQPNUVXFWHGWWVD6LNOHYGN472}

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	2026-05-18T02:27:44.300574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c1eda56e5b1cd6b547e5b5c7c19bcfeb9aa131ab5b2f48a59db11b211a60a0f

Aliases

arxiv: 1409.2044 · arxiv_version: 1409.2044v2 · doi: 10.48550/arxiv.1409.2044 · pith_short_12: HQPNUVXFWHGW · pith_short_16: HQPNUVXFWHGWWVD6 · pith_short_8: HQPNUVXF

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/HQPNUVXFWHGWWVD6LNOHYGN472 \
  | 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: 3c1eda56e5b1cd6b547e5b5c7c19bcfeb9aa131ab5b2f48a59db11b211a60a0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acfd5145d12b4c5d8ca6982e9278c6c9b5b4e3364c655a92aee5d60484f9e640",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-09-06T18:38:51Z",
    "title_canon_sha256": "7477706d2dc4a31eb87421c1df713791c7e3604e8a52065ea13128b18441cc71"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.2044",
    "kind": "arxiv",
    "version": 2
  }
}