Pith Number

pith:H2OEE4AK

pith:2001:H2OEE4AKUS63RHAE5L3UHCVROP

not attested not anchored not stored refs pending

Twists and spectral triples for isospectral deformations

Andrzej Sitarz

arxiv:math/0102074 v2 · 2001-02-09 · math.QA · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H2OEE4AKUS63RHAE5L3UHCVROP}

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	2026-05-18T00:14:23.500794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e9c42700aa4bdb89c04eaf7438ab173d5efc4c56065f71e3a196d71f93489c4

Aliases

arxiv: math/0102074 · arxiv_version: math/0102074v2 · doi: 10.48550/arxiv.math/0102074 · pith_short_12: H2OEE4AKUS63 · pith_short_16: H2OEE4AKUS63RHAE · pith_short_8: H2OEE4AK

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/H2OEE4AKUS63RHAE5L3UHCVROP \
  | 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: 3e9c42700aa4bdb89c04eaf7438ab173d5efc4c56065f71e3a196d71f93489c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bdfbbdf37463bec8cbe37a29af4214b06c6296e558c05072a06c484192e65eb0",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "",
    "primary_cat": "math.QA",
    "submitted_at": "2001-02-09T00:00:34Z",
    "title_canon_sha256": "42479f49039c90f5e12707d605010d0864338520baddc766b98c7a1c689a167e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0102074",
    "kind": "arxiv",
    "version": 2
  }
}