Pith Number

pith:YUPNRE6Y

pith:2013:YUPNRE6YTQPU4SLHEKIXLKYXTJ

not attested not anchored not stored refs pending

Classifying matchbox manifolds

Alex Clark, Olga Lukina, Steven Hurder

arxiv:1311.0226 v2 · 2013-11-01 · math.DS · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YUPNRE6YTQPU4SLHEKIXLKYXTJ}

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	2026-05-17T23:51:35.080754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c51ed893d89c1f4e4967229175ab179a59a40c1d5d4aa075566cae2a54380036

Aliases

arxiv: 1311.0226 · arxiv_version: 1311.0226v2 · doi: 10.48550/arxiv.1311.0226 · pith_short_12: YUPNRE6YTQPU · pith_short_16: YUPNRE6YTQPU4SLH · pith_short_8: YUPNRE6Y

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/YUPNRE6YTQPU4SLHEKIXLKYXTJ \
  | 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: c51ed893d89c1f4e4967229175ab179a59a40c1d5d4aa075566cae2a54380036

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdc174d4d9e0603ec5dcec8346689f8535322985f35d637d005a896cb1d3e3dd",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2013-11-01T17:13:46Z",
    "title_canon_sha256": "d3f5bbfa469d602b1d48aa80bc0eaa82dee432b5880c05923445fcd99cb0f6dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.0226",
    "kind": "arxiv",
    "version": 2
  }
}