Pith Number

pith:PP4V2J6E

pith:2016:PP4V2J6EKMEA7AZ66PSWARSQIY

not attested not anchored not stored refs pending

On the definition of spacetimes in Noncommutative Geometry, part II

Fabien Besnard

arxiv:1611.07842 v1 · 2016-11-23 · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PP4V2J6EKMEA7AZ66PSWARSQIY}

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	2026-05-18T00:56:59.682128Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bf95d27c453080f833ef3e56046504620db347f8e11c96472154bc7064cf680

Aliases

arxiv: 1611.07842 · arxiv_version: 1611.07842v1 · doi: 10.48550/arxiv.1611.07842 · pith_short_12: PP4V2J6EKMEA · pith_short_16: PP4V2J6EKMEA7AZ6 · pith_short_8: PP4V2J6E

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/PP4V2J6EKMEA7AZ66PSWARSQIY \
  | 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: 7bf95d27c453080f833ef3e56046504620db347f8e11c96472154bc7064cf680

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "199555fea97896f9f08a4f303a284b9bcfde05c528cc1a13465c97d3162f187a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2016-11-23T15:28:15Z",
    "title_canon_sha256": "7dcbfe2471f71fb220c001fee2eaf282ae71c1f2501423bb1aefca8fd041d5bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.07842",
    "kind": "arxiv",
    "version": 1
  }
}