Pith Number

pith:QBYMDJ6Q

pith:2012:QBYMDJ6QAZRSKW74G44VWTWQ6B

not attested not anchored not stored refs pending

A Note on Integrability and Internality in DCF0

Davide Penazzi, Joel Nagloo

arxiv:1212.4753 v1 · 2012-12-19 · math.LO · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QBYMDJ6QAZRSKW74G44VWTWQ6B}

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	2026-05-18T03:38:05.441290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8070c1a7d00663255bfc37395b4ed0f05d40446ddde5d97f29c446698ef7e1e3

Aliases

arxiv: 1212.4753 · arxiv_version: 1212.4753v1 · doi: 10.48550/arxiv.1212.4753 · pith_short_12: QBYMDJ6QAZRS · pith_short_16: QBYMDJ6QAZRSKW74 · pith_short_8: QBYMDJ6Q

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/QBYMDJ6QAZRSKW74G44VWTWQ6B \
  | 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: 8070c1a7d00663255bfc37395b4ed0f05d40446ddde5d97f29c446698ef7e1e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe41d98b5d4b10db83a14ed9f8732b7a80eca7397f003e439abb762298788b53",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-12-19T17:26:54Z",
    "title_canon_sha256": "72ea00e151f64769ec41e41b5e5e1ef47c3d56db9d2138c51740c08890e4ae73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4753",
    "kind": "arxiv",
    "version": 1
  }
}