Pith Number

pith:SUNPHIOJ

pith:2014:SUNPHIOJQNPTNAEQNSUJYMKRTJ

not attested not anchored not stored refs pending

Geometric construction of Hopf cyclic characteristic classes

Henri Moscovici

arxiv:1404.5936 v2 · 2014-04-23 · 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{SUNPHIOJQNPTNAEQNSUJYMKRTJ}

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	2026-05-18T02:27:44.644525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

951af3a1c9835f3680906ca89c31519a7371e663833c34fa40490258495414ff

Aliases

arxiv: 1404.5936 · arxiv_version: 1404.5936v2 · doi: 10.48550/arxiv.1404.5936 · pith_short_12: SUNPHIOJQNPT · pith_short_16: SUNPHIOJQNPTNAEQ · pith_short_8: SUNPHIOJ

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/SUNPHIOJQNPTNAEQNSUJYMKRTJ \
  | 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: 951af3a1c9835f3680906ca89c31519a7371e663833c34fa40490258495414ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6177737528a94bcc81560910eb486fd67f9984aff165eabb23b1656658469732",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-04-23T19:42:53Z",
    "title_canon_sha256": "e71010dc6317c5a7233ee0c49c969fdf89c5f1a1c45d50a51c4e072674784680"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.5936",
    "kind": "arxiv",
    "version": 2
  }
}