Pith Number

pith:TCHB7ZH2

pith:2018:TCHB7ZH27NVDDFO3VYXHIJJMFA

not attested not anchored not stored refs pending

The class of a fibre in Noncommutative Geometry

Heath Emerson

arxiv:1802.06465 v2 · 2018-02-18 · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TCHB7ZH27NVDDFO3VYXHIJJMFA}

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	2026-05-17T23:44:33.997255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

988e1fe4fafb6a3195dbae2e74252c2834a4e1e2031ee6796e5ec5abe4bb0d38

Aliases

arxiv: 1802.06465 · arxiv_version: 1802.06465v2 · doi: 10.48550/arxiv.1802.06465 · pith_short_12: TCHB7ZH27NVD · pith_short_16: TCHB7ZH27NVDDFO3 · pith_short_8: TCHB7ZH2

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/TCHB7ZH27NVDDFO3VYXHIJJMFA \
  | 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: 988e1fe4fafb6a3195dbae2e74252c2834a4e1e2031ee6796e5ec5abe4bb0d38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afd3f6a970dad3d50dbf3bef1552c6dc47e000f66dfbbfc0a98e65b8c685b4de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2018-02-18T22:56:42Z",
    "title_canon_sha256": "696816e72cb6f245155f5266d16f7812b39ee29c0a846f12a0c738b8321ad78b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06465",
    "kind": "arxiv",
    "version": 2
  }
}